X chromosome

noun

Definition of X chromosome 

: a sex chromosome that usually occurs paired in each female cell and single in each male cell in species in which the male typically has two unlike sex chromosomes — compare y chromosome

First Known Use of X chromosome

1911, in the meaning defined above

Keep scrolling for more

Learn More about X chromosome

Share X chromosome

Dictionary Entries near X chromosome

X-body

X-C

X-chair

X chromosome

x-coordinate

Xe

xebec

Statistics for X chromosome

Look-up Popularity

Time Traveler for X chromosome

The first known use of X chromosome was in 1911

See more words from the same year

Keep scrolling for more

More Definitions for X chromosome

X chromosome

noun

English Language Learners Definition of X chromosome

: a type of chromosome that is found in pairs in the cells of female mammals and is found with the Y chromosome in the cells of male mammals

X chromosome

noun

Medical Definition of X chromosome 

: a sex chromosome that usually occurs paired in each female cell and single in each male cell in species in which the male typically has two unlike sex chromosomes — compare y chromosome

More from Merriam-Webster on X chromosome

Rhyming Dictionary: Words that rhyme with X chromosome

Comments on X chromosome

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

WORD OF THE DAY

having a pattern of small flowers

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

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!