Also found in: Thesaurus, Medical, Legal, Financial, Encyclopedia, Wikipedia.
Related to Barr body: Pseudoautosomal region
The condensed, inactive X chromosome found in the nuclei of somatic cells of most female mammals. Also called sex chromatin.
[After Murray Llewellyn Barr (1908-1995), Canadian anatomist.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
an inactive Xchromosome present in the nuclear membrane of female somatic cells, used for verifying the sex of an individual.
[1960–65; after Murray Latin. Barr (born 1908), Canadian physician]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.