Ryan, J.
In this public utility rate case, we address a relatively simple, but important, procedural question:
Whether an order of the Michigan Public Service Commission granting "partial and immediate” rate relief under MCL 460.6a; MSA 22.13(6a), is a "final decision or order” within the meaning of the Administrative Procedures Act and Const 1963, art 6, § 28.
[170]*170We hold that it is not, reverse the judgment of the Court of Appeals, and remand the matter to that Court for further consideration.
I
In July of 1977, The Detroit Edison Company filed an application with the Michigan Public Service Commission for a permanent rate increase of 122.3 million dollars. Its petition was accompanied by a written motion for a "partial and immediate” rate increase of 69.9 million dollars.
A request for interim rate relief, as a petition for a "partial and immediate” rate increase is generally known in public utility litigation, is specifically authorized by MCL 460.6a; MSA 22.13(6a), and is intended to enable a utility to obtain a partial and immediate rate order to meet its increased costs during the time its petition for a permanent rate increase is being contested before the commission and considered by it.1_
[171]*171Detroit Edison began the presentation of its case before the commission on September 26, 1977, after first giving notice to the public and interested parties within the service area affected, as is required by subsection (1) of § 6a. The presentation and cross-examination of Edison’s case took approximately 40 days of hearing and concluded on November 29, 1977. Some three weeks later, on December 21, 1977, the commission filed its staff report recommending that Edison be granted a partial and immediate rate increase of 37.9 million dollars. A hearing on the motion for the interim relief was held on January 4, 1978, at which time the commission’s staff report was presented, and its sponsor, Charles W. Geyer, testified in support of the recommendation and was cross-examined. The only other testimony had been offered by Edison’s witness, Richard C. Viinikainen. All par[172]*172ties, including the plaintiffs, were afforded the opportunity to file briefs and make oral argument concerning the interim rate request. The plaintiffs were not allowed, however, to present any evidence, it being the judgment of the hearing officer that they were not entitled to do so. That ruling was later confirmed by the commission, which held that § 6a "does not provide for submission of evidence by intervenors prior to the commission’s ruling on interim relief’.2
By its February 17, 1978, order granting in part the motion for partial and immediate revenue relief, the commission granted Edison an immediate revenue increase of 35.4 million dollars which it found to be necessary to protect Edison from "harmful and unreasonable loss of revenue” while the petition for permanent rate relief was under consideration. The commission ordered that the 35.4 million dollars be produced by a uniform surcharge to all of the utility’s customers of .96 mills per kilowatt hour. The order required that Edison post a bond sufficient to cover a possible refund to its utility customers, in the event the interim rate increase was later determined to be excessive.
The plaintiffs, industrial energy users, filed an application for rehearing before the commission on March 8, 1978. They registered no objection to the amount of the rate increase, but strongly protested the commission’s formula for producing the revenue. The plaintiffs claimed that a flat uniform surcharge to all classes of utility customers was an [173]*173inequitable distribution of the interim rate burden, and that each of the classes of the utility’s customers should be required to absorb only that percentage of the interim rate increase which corresponds with the permanent rate assigned to each.
Under the existing rate structure, the industrial plaintiffs paid lower rates per kwh than did residential customers. The flat rate surcharge authorized by the interim order meant that industrial users would be paying a greater proportion of the rate increase than if the surcharge were a percentage increase of previous rates. In fact, the .96-mill surcharge increased the rates to the domestic customer class approximately 2.15%, to the commercial class rates approximately 1.99%, and to the industrial class of users about 3%. While the percentage differential is small, it reflects a substantial sum of money for the industrial users. The plaintiffs, for example, allege that they paid $138,-000 more per month under the flat rate surcharge of the interim order than they would have paid had an equal percentage increase been imposed on all customer classes.
Although it is this rate design dispute which is at the heart of this litigation, we do not now address the matter further because our disposition of this appeal directs that the issue be considered on remand by the Court of Appeals.
The industrial users’ request for rehearing was denied, and on September 28, 1978, the commission issued a final order dissolving a temporary rate increase and granting Edison a permanent revenue increase in excess of $83,792,000 annu[174]*174ally.3 No refund of any collections under the partial and immediate rate increase order was ordered and no appeal of any provision of the final order was taken by any party.
The plaintiffs filed suit in the Ingham Circuit Court attacking the commission’s orders granting partial and immediate relief and denying the utility users’ motion for rehearing. The first count of the plaintiffs’ complaint alleged a violation of § 85 of the Administrative Procedures Act, MCL 24.285; MSA 3.560(185), in that the flat rate surcharge was not supported by "competent, material and substantial evidence on the record as a whole or any portion thereof’. The second count of the complaint alleged a violation of Const 1963, art 6, §28, in that the flat rate surcharge was not supported by "competent, material and substantial evidence on the whole record” and that "in fact there was no evidence to support the rate design” of the order. The third count, apparently based on MCL 462.26; MSA 22.45, alleged that the challenged interim rate orders were "arbitrary, unreasonable, capricious, an abuse of discretion and unlawful”.4
[175]*175In an opinion dated October 24, 1978, the learned circuit judge held that the challenged orders were not "final” within the meaning of § 85 of the APA, and thus not subject to review under the "competent, material and substantial evidence” test of that section, or of Const 1963, art 6, §28. The circuit judge then considered and rejected the plaintiffs’ claim under MCL 462.26; MSA 22.45 that the rate design of the partial and immediate rate increase was confiscatory, unreasonable, or violative of due process. Upon a stipulation by the parties that the trial court’s opinion disposed of all the issues in the case, summary judgment was entered in favor of the commission on December 13, 1978.
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Ryan, J.
In this public utility rate case, we address a relatively simple, but important, procedural question:
Whether an order of the Michigan Public Service Commission granting "partial and immediate” rate relief under MCL 460.6a; MSA 22.13(6a), is a "final decision or order” within the meaning of the Administrative Procedures Act and Const 1963, art 6, § 28.
[170]*170We hold that it is not, reverse the judgment of the Court of Appeals, and remand the matter to that Court for further consideration.
I
In July of 1977, The Detroit Edison Company filed an application with the Michigan Public Service Commission for a permanent rate increase of 122.3 million dollars. Its petition was accompanied by a written motion for a "partial and immediate” rate increase of 69.9 million dollars.
A request for interim rate relief, as a petition for a "partial and immediate” rate increase is generally known in public utility litigation, is specifically authorized by MCL 460.6a; MSA 22.13(6a), and is intended to enable a utility to obtain a partial and immediate rate order to meet its increased costs during the time its petition for a permanent rate increase is being contested before the commission and considered by it.1_
[171]*171Detroit Edison began the presentation of its case before the commission on September 26, 1977, after first giving notice to the public and interested parties within the service area affected, as is required by subsection (1) of § 6a. The presentation and cross-examination of Edison’s case took approximately 40 days of hearing and concluded on November 29, 1977. Some three weeks later, on December 21, 1977, the commission filed its staff report recommending that Edison be granted a partial and immediate rate increase of 37.9 million dollars. A hearing on the motion for the interim relief was held on January 4, 1978, at which time the commission’s staff report was presented, and its sponsor, Charles W. Geyer, testified in support of the recommendation and was cross-examined. The only other testimony had been offered by Edison’s witness, Richard C. Viinikainen. All par[172]*172ties, including the plaintiffs, were afforded the opportunity to file briefs and make oral argument concerning the interim rate request. The plaintiffs were not allowed, however, to present any evidence, it being the judgment of the hearing officer that they were not entitled to do so. That ruling was later confirmed by the commission, which held that § 6a "does not provide for submission of evidence by intervenors prior to the commission’s ruling on interim relief’.2
By its February 17, 1978, order granting in part the motion for partial and immediate revenue relief, the commission granted Edison an immediate revenue increase of 35.4 million dollars which it found to be necessary to protect Edison from "harmful and unreasonable loss of revenue” while the petition for permanent rate relief was under consideration. The commission ordered that the 35.4 million dollars be produced by a uniform surcharge to all of the utility’s customers of .96 mills per kilowatt hour. The order required that Edison post a bond sufficient to cover a possible refund to its utility customers, in the event the interim rate increase was later determined to be excessive.
The plaintiffs, industrial energy users, filed an application for rehearing before the commission on March 8, 1978. They registered no objection to the amount of the rate increase, but strongly protested the commission’s formula for producing the revenue. The plaintiffs claimed that a flat uniform surcharge to all classes of utility customers was an [173]*173inequitable distribution of the interim rate burden, and that each of the classes of the utility’s customers should be required to absorb only that percentage of the interim rate increase which corresponds with the permanent rate assigned to each.
Under the existing rate structure, the industrial plaintiffs paid lower rates per kwh than did residential customers. The flat rate surcharge authorized by the interim order meant that industrial users would be paying a greater proportion of the rate increase than if the surcharge were a percentage increase of previous rates. In fact, the .96-mill surcharge increased the rates to the domestic customer class approximately 2.15%, to the commercial class rates approximately 1.99%, and to the industrial class of users about 3%. While the percentage differential is small, it reflects a substantial sum of money for the industrial users. The plaintiffs, for example, allege that they paid $138,-000 more per month under the flat rate surcharge of the interim order than they would have paid had an equal percentage increase been imposed on all customer classes.
Although it is this rate design dispute which is at the heart of this litigation, we do not now address the matter further because our disposition of this appeal directs that the issue be considered on remand by the Court of Appeals.
The industrial users’ request for rehearing was denied, and on September 28, 1978, the commission issued a final order dissolving a temporary rate increase and granting Edison a permanent revenue increase in excess of $83,792,000 annu[174]*174ally.3 No refund of any collections under the partial and immediate rate increase order was ordered and no appeal of any provision of the final order was taken by any party.
The plaintiffs filed suit in the Ingham Circuit Court attacking the commission’s orders granting partial and immediate relief and denying the utility users’ motion for rehearing. The first count of the plaintiffs’ complaint alleged a violation of § 85 of the Administrative Procedures Act, MCL 24.285; MSA 3.560(185), in that the flat rate surcharge was not supported by "competent, material and substantial evidence on the record as a whole or any portion thereof’. The second count of the complaint alleged a violation of Const 1963, art 6, §28, in that the flat rate surcharge was not supported by "competent, material and substantial evidence on the whole record” and that "in fact there was no evidence to support the rate design” of the order. The third count, apparently based on MCL 462.26; MSA 22.45, alleged that the challenged interim rate orders were "arbitrary, unreasonable, capricious, an abuse of discretion and unlawful”.4
[175]*175In an opinion dated October 24, 1978, the learned circuit judge held that the challenged orders were not "final” within the meaning of § 85 of the APA, and thus not subject to review under the "competent, material and substantial evidence” test of that section, or of Const 1963, art 6, §28. The circuit judge then considered and rejected the plaintiffs’ claim under MCL 462.26; MSA 22.45 that the rate design of the partial and immediate rate increase was confiscatory, unreasonable, or violative of due process. Upon a stipulation by the parties that the trial court’s opinion disposed of all the issues in the case, summary judgment was entered in favor of the commission on December 13, 1978.
On appeal, the Court of Appeals held that the commission’s order for partial and immediate rate relief was a "final decision or order” within the meaning of §85 of the APA, reversed the judgment of the circuit court, and remanded to the commission for further proceedings to be conducted in compliance with § 85 of the APA.5 The Court of Appeals did not decide whether the circuit judge was correct in holding that the flat rate surcharge was not "unlawful or unreasonable” within the meaning of MCL 462.26; MSA 22.45, resolution of that question being unnecessary in view of its decision concerning the applicability of § 85 of the APA.
We granted leave to appeal and directed the [176]*176parties to include among the issues to be briefed whether the commission’s order granting partial and immediate relief is a "final decision or order” subject to the requirements of § 85 of the APA and Const 1963, art 6, § 28.
II
The significance of the stated question is that if an order for a "partial and immediate” rate increase, pursuant to § 6a, is a "final decision or order of an agency” under § 85 of the APA, it must be supported by findings of fact and conclusions of law in accordance with the fullness of form and content mandated by § 85, and "supported by and in accordance with * * * competent, material and substantial evidence” on the "record as a whole”. Similarly, Const 1963, art 6, § 28 requires that "[a]ll final decisions * * * of any administrative * * * agency [be] supported by competent, material and substantial evidence on the whole record”.
A
The plaintiffs contend that the detailed findings of fact and conclusions of law required by § 85 of the APA to support a "final decision or order” were not made by the commission in this case and that, in any event, the interim rate relief order is not supported by competent, material and substantial evidence on the whole record.
We do not decide whether the interim order, and particularly the rate design, has adequate eviden-tiary support in the record, however, because we confine our holding to the determination that the [177]*177partial and immediate rate order is not a "final order” within the meaning of § 85 of the APA and Const 1963, art 6, § 28, and thus need not comply with their requirements.
In concluding that the commission’s order is not a "final decision or order” within the meaning of § 85, we recognize that the word "final”, in the context of appealability, is an "abstruse and infinitely uncertain term”.6 Its meaning, for purposes of this litigation, cannot be determined merely by examining its etymology and settling upon an acceptable dictionary definition as though the word were an adjective disassociated from any specific context. The expression "final decision or order” takes its meaning, in the usage involved in this case, from the context in which it is employed in § 6a and in light of a common-sense appreciation of what the Legislature intended the idiom to mean, had legislative thought been given to the specific question before us.
The plaintiffs argue that the finality of any rate decision should be determined by the effect of the commission’s order. Since the order challenged here had the immediate and significant effect of requiring plaintiffs to pay a substantially higher electric rate, with the concomitant loss of interest of some 20% per annum on those funds, or suffer the shutoff of their electric power, it is claimed that the order should have been immediately ap-[178]*178pealable as of right under § 85 of the APA, and thus must have been "final”.
We think there are two answers to that contention:
Firstly, without deciding the matter, we observe that it appears unlikely that review of the commission’s permanent rate order in this case would not have provided an adequate remedy in the event the partial and immediate order later proved to be inappropriate, since the interim order required Edison to post bond to guarantee a source for refunds if the order was later found to be excessive.7 Any "appropriate refunds”, which might later be thought to have been warranted, might well have included a refund with interest for the period of time Edison held any funds that it should not have collected. This Court has recognized, in dicta, the propriety of a full refund, with interest, if a regulated utility collects funds under a preliminary injunction ultimately held to be unlawful. Michigan Consolidated Gas Co v Public Service Comm, 389 Mich 624, 640-643; 209 NW2d 210 (1973); see also General Telephone Co of Michigan v Public Service Comm, 341 Mich 620, 632-633; 67 NW2d 882 (1954). There appears to be no logical reason why the commission may not predicate the grant of immediate rate relief on a bond to insure refunds with interest if requested to do so, and if appropriate.
Secondly, the order for partial and immediate [179]*179relief is immediately reviewable as of right, without qualifying as a "final decision or order”.
The plaintiffs argue that a "final” order is ap-pealable as of right; that orders of the MPSC fixing a rate are appealable as of right, Attorney General v Michigan Public Service Comm, 392 Mich 660; 221 NW2d 299 (1974); MCL 462.26; MSA 22.45; and that, therefore, the order setting partial and immediate rates in this case is a "final” order for APA purposes. The invalidity of that apparent effort at syllogistic reasoning, however, is in the fact that an order fixing a rate is immediately appealable not because it is final, but because a specific statute grants a right to appeal from any rate order, whether interlocutory or final. MCL 462.26(a); MSA 22.45(a) provides:
"Any common carrier or other party in interest, being dissatisfied with any order of the commission fixing any rate or rates, fares, charges, classifications, joint rate or rates, or any order fixing any regulations, practices or services, may within 30 days from the issuance of such an order and notice thereof commence an action in the circuit court in chancery for the county of Ingham, against the commission as defendant to vacate and set aside any such order on the ground that the rate or rates, fares, charges, classifications, joint rate or rates fixed are unlawful or unreasonable.” (Emphasis added.)
The Court of Appeals reasoned that a partial and immediate order is "final” from the perspective of the utility because it limits the utility’s revenue until a new rate structure is approved and that "[f|or the sake of consistency, an interim order should not be final as against a utility which may not secure retroactive rates at a later date and not final for another aggrieved party which [180]*180seeks relief. That haphazard application of § 85 would only confuse the commission’s operations”. 94 Mich App 694, 700; 290 NW2d 54 (1980). In the sense in which the notion of finality is used here, we find nothing inherently inconsistent with an order being "final” as to one party but not another, or for one purpose and not another. More important, an order is not necessarily "final” as to the utility simply because it has immediate and irreparable efiect. Certainly, it is true that if the APA applied, an aggrieved utility might well obtain leave to appeal on the basis of the fact that the' proscription against retroactive ratemaking makes appeal from the permanent order an inadequate remedy. MCL 24.301; MSA 3.560(201). But that is not the case before us. In any event, irreparable harm to a utility, in the sense of a prohibition against retroactive ratemaking, alone cannot make an otherwise interlocutory order "final” within the meaning of § 85 of the APA if that were not the legislative intention.
B
There are several reasons which suggest that it is not the intention of the Legislature that a § 6a order for partial and immediate relief is a "final order” as that expression is employed in § 85 of the APA and Const 1963, art 6, § 28.
The text of § 6a, which is set forth in footnote 1, is organized into three subsections. Only subsection (1) deals with the subject of partial and immediate rate orders and by its plain language contemplates that such an order is to be entered only during the pendency of the petition for a permanent rate change. The Legislature declared in subsection (1) (see fn 1) that an interim order is to be issued "upon written motion” and in the "dis[181]*181cretion” of the commission, and is to be issued "pending the submission of all proofs by any interested parties” on the permanent rate change request. Both the language used to describe the conditions for the issuance of an interim order and its secondary and incidental place in the context in which it is found in subsection (1) suggests that the "partial and immediate” order is intended to be interlocutory, intermediate, and emergency relief, not required to be sustained at the time of issuance by the same quality of procedural process and substantive proof as is required by § 85 to support a "final” permanent rate order.
In subsections (2) and (3) of § 6a there is reference to a "final decision” five times. There is no reference to a "final decision” at all in the subsection (1) language dealing with a partial and immediate rate order, suggesting strongly that partial and immediate relief is something other than a "final decision”. The language of subsections (2) and (3) calls for the adoption of "rules and procedures” for processing utility rate change requests to enable the commission to "reach a final decision * * * within a period of 9 months from the filing thereof’. That language plainly refers to a petition for permanent relief, and contrasts sharply with the subsection (1) authorization for an "immediate” rate order "pending the submission of all proofs” which is not described as a final decision, suggesting an intended distinction. While subsection (1) does provide that interested parties are to be afforded a "full and complete hearing” on the motion for partial and immediate relief, the context of the provision forcefully suggests that it was the intent of the Legislature to provide an expedient, more summary, and less exhaustive hearing for the issuance of an interim rate order than for [182]*182the issuance of a final order.8 If the more formal and detailed requirements of § 85 of the APA for a "final decision or order” were applicable, interested parties would be entitled to "an opportunity to present evidence and argument on issues of fact”. MCL 24.272(3); MSA 3.560(172X3). While such a requirement would be ideal, it would convert the motion-predicated interim rate relief request into a full-blown petition proceeding which would be pr'ocedurally indistinguishable from the permanent rate request procedures which § 6a contemplates may last for as long as nine months.
Because in our judgment the commission is required to conduct a less exhaustive hearing before granting partial and immediate rate relief "pending the submission of all proofs by interested parties”, its discretion in granting such relief is to be reviewed upon a less demanding standard of review: the "unlawful or unreasonable” test of MCL 462.26(a); MSA 22.45(a). As we have said, part of the significance of the claim that a "partial and immediate” rate order is a final decision is the fact that, by definition, a final decision must be based upon "competent, substantial and material evidence” on the whole record. Const 1963, art 6, § 28. Section 6a(l) expressly provides, however, that the decision upon the "motion” for interim relief is to be made "pending submission of all proofs” and, therefore, necessarily before "the whole record” exists. It is obvious that if the interim order is to be entered before • the whole record is made, it cannot be reviewable upon a standard of "competent, material and substantial evidence on the whole record”.
[183]*183We are satisfied that the availability of immediate review under the "unlawful or unreasonable” test of § 26 is sufficient to protect the interests of both the utilities and utility customers alike and, at the same time, comply with the intent of the Legislature that the interim rate order be subject to prompt judicial scrutiny. Further protection, of course, is provided by way of an appeal from any final order of the commission which fails to direct payment of refunds when they are justified. If the parties had proposed the inclusion of such a remedy in the final order in this case, and the commission denied the payment of any refunds warranted by the facts, the plaintiffs could have appealed.
Finally, we must disagree with the fear expressed by the Court of Appeals that "the entire review scheme would be rendered a nullity” because the entry of "final” orders would render appeals from partial and immediate orders moot. While appeals by utilities of interim orders may be mooted because of a superseding final order and the ban against retroactive ratemaking, that is not always the case. See Michigan Bell Telephone Co v Public Service Comm, 85 Mich App 163, 165-167; 270 NW2d 546 (1978), Iv den 405 Mich 822 (1979), which, while not involving an interim order, addressed the same mootness argument. In any event, as to the plaintiffs in this case, it is clear that our determination that the partial and immediate rate order in question is not a "final decision or order” does not moot their appeal as of right under § 26 as embodied in count III of their amended complaint.
The circuit judge considered and rejected plaintiffs’ count III claim that the partial and immediate order was "unlawful or unreasonable”. Because of its disposition of the case, the Court of [184]*184Appeals failed to address this issue and, thus, never reached the crucial dispute between the parties: whether the rate design of the interim order was valid.
We therefore reverse the decision of the Court of Appeals and remand the matter to that Court for consideration of plaintiffs’ appeal under § 26. We do not retain jurisdiction.
No costs. A public question is involved.
Fitzgerald, C.J., and Kavanagh, Williams, Coleman, and Levin, JJ., concurred with Ryan, J.