Online Etymology Dictionary, © 2010 Douglas Harper
- The state of having a chromosome number that is not a multiple of the haploid number.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- The state or condition of being aneuploid.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.