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thymus definition

thy·mus (t̸hī′məs)

noun

a gland in the upper thorax or neck of all vertebrates, involved in the production of lymphocytes: in humans, it is most prominent at puberty, after which it disappears or becomes vestigial
also thymus gland

Etymology: ModL < Gr thymos, orig., a warty excrescence

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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