Barr body

noun
\ ˈbär- How to pronounce Barr body (audio) \

Definition of Barr body

: a densely staining inactivated condensed X chromosome that is present in each somatic cell of most female mammals and is used as a test of genetic femaleness (as in a fetus)

called also sex chromatin

First Known Use of Barr body

1961, in the meaning defined above

History and Etymology for Barr body

Murray Llewellyn Barr †1995 Canadian anatomist

Keep scrolling for more

Learn More about Barr body

Time Traveler for Barr body

Time Traveler

The first known use of Barr body was in 1961

See more words from the same year

Statistics for Barr body

Cite this Entry

“Barr body.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Barr%20body. Accessed 5 Jul. 2020.

Keep scrolling for more

More Definitions for Barr body

Barr body

noun
\ ˈbär- How to pronounce Barr body (audio) \

Medical Definition of Barr body

: a densely staining inactivated condensed X chromosome that is present in each somatic cell of most female mammals and is used as a test of genetic femaleness (as in a fetus or an athlete)

called also sex chromatin

More from Merriam-Webster on Barr body

Rhyming Dictionary: Words that rhyme with Barr body

Comments on Barr body

What made you want to look up Barr body? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

A More Exception(al) Quiz

  • hot dog  hot dog  hot dog  hot dog cat
  • Which of the following words is not a synonym for ‘a young person’?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!