adjective Genetics.
  1. of or relating to a trait controlled by a gene or genes on the X chromosome.
  2. of or relating to a gene on an X chromosome.

Origin of X-linked

First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

x-linked in Medicine


  1. Of, relating to, or characterized by genes situated on the X-chromosome.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

x-linked in Science


  1. Relating to an inherited trait controlled by a gene on an X-chromosome. Orange fur color is an X-linked trait in cats.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.