[ dih-teer-ee-uh-rey-shuh n ]
/ dɪˌtɪər i əˈreɪ ʃən /


the act or process of deteriorating.
the state or condition of having deteriorated.
a gradual decline, as in quality, serviceability, or vigor.

Nearby words

  1. deter,
  2. deterge,
  3. detergency,
  4. detergent,
  5. deteriorate,
  6. determinable,
  7. determinacy,
  8. determinant,
  9. determinate,
  10. determination

Origin of deterioration

1650–60; < Late Latin dēteriōrātiōn- (stem of dēteriōrātiō), equivalent to dēteriōrāt(us) (see deteriorate) + -iōn- -ion

Related formsnon·de·te·ri·o·ra·tion, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for deterioration

Word Origin and History for deterioration



1650s, possibly a native formation, or else from French détérioration (15c.), noun of action from détériorer, from Late Latin deteriorare (see deteriorate).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for deterioration


[ dĭ-tîr′ē-ə-rāshən ]


The process or condition of becoming worse.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.