tetrad

tetrad definition - medical

tet·rad (tĕtˈrădˌ)

noun
  1. A group or set of four.
  2. A tetravalent atom, radical, or element.
  3. A group of four chromatids formed from each of a pair of homologous chromosomes that split longitudinally during the prophase of meiosis.

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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