Barr Body Definition
bär
noun
The condensed, inactive X-chromosome found in the nuclei of somatic cells of most female mammals.
American Heritage
A structure found on the inside of the nuclear membrane of female cells that takes a dark stain and indicates by its presence the sex of the individual.
Webster's New World
The condensed, inactive X chromosome found in the nuclei of somatic cells of most female mammals.
American Heritage Medicine
(biology) A sex chromosome inactivated by packing in heterochromatin.
Wiktionary
Origin of Barr Body
After Murray Llewellyn Barr (1908–1995), Canadian anatomist
From American Heritage Dictionary of the English Language, 5th Edition
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