thymus

thymus definition - medical

thy·mus (thīˈməs)

noun pl. thy·mus·es
  1. A lymphoid organ that is located in the superior mediastinum and lower part of the neck and is necessary in early life for the normal development of immunological function.
  2. The thymus of a calf or lamb.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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