v. de·pre·ci·at·ed, de·pre·ci·at·ing, de·pre·ci·ates
1. To lessen the price or value of: An increase in the supply of money depreciated the currency.
2. To write off an expenditure for (a tangible asset) by prorating over a certain period, usually the estimated useful life of the asset.
To diminish in price or value: "When issued in excess, as during the Revolution, paper depreciated in value" (Daniel Feller).
[Medieval Latin dēpreciāre, dēpreciāt-, alteration of Latin dēpretiāre : dē-, de- + pretium, price; see per-5 in the Appendix of Indo-European roots.]
de·precia·ble (-shə-bəl) adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.