Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • transitive verb To lower the rating of (a device), especially because of a deterioration in efficiency or quality.
  • transitive verb To lower the financial rating of (a corporation, for example).

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • verb To lower the rated capability of any rated equipment or material.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • verb lower the rated electrical capability of electrical apparatus

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[de– + rate.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

de- +‎ rate

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