sex chromosome


Definition of sex chromosome

: a chromosome that is inherited differently in the two sexes, that is concerned directly with the inheritance of sex, and that is the seat of factors governing the inheritance of various sex-linked and sex-limited characters — compare x chromosome, y chromosome

First Known Use of sex chromosome

1906, in the meaning defined above

Keep scrolling for more

Learn More about sex chromosome

Share sex chromosome

Statistics for sex chromosome

Look-up Popularity

Time Traveler for sex chromosome

The first known use of sex chromosome was in 1906

See more words from the same year

Keep scrolling for more

More Definitions for sex chromosome

sex chromosome


Medical Definition of sex chromosome

: a chromosome (as the X chromosome or the Y chromosome in humans) of a sexually reproducing eukaryotic organism that is directly concerned with the inheritance of sex, that contains the genes governing the inheritance of various sex-linked and sex-limited characteristics, and that is represented differently in the two sexes either by being present in one and not the other or by being present a different number of times in one sex compared to the other

called also heterochromosome

More from Merriam-Webster on sex chromosome Encyclopedia article about sex chromosome

Comments on sex chromosome

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


means, resources, or money

Get Word of the Day daily email!

Test Your Vocabulary

Homophone Quiz

  • three-bears-two-of-them-look-like-theyre-whispering-to-a-third-bear-who-looks-chuffed-to-be-the-center-of-attention
  • In order to judge how people felt, the senator's office hired a firm to take a ______.
True or False

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

Word Winder's CrossWinder

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


Love words? Need even more definitions?

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