retardation Hear it!

retardation definition

re·tar·da·tion (rē′tär dā′s̸hən)

noun

  1. a retarding or being retarded
  2. something that retards; hindrance
  3. mental retardation
  4. a decrease in velocity
  5. the amount that something is retarded

Etymology: ME < L retardatio

Related Forms:

  • retardative re·tard′a·tive (ri tär′də tiv) adjective or retardatory re·tard′a·to′ry (-tôr′ē)

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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