Definition of "aneuploidy" []

• The state or condition of being aneuploid. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "In an average, healthy man, one to four percent of his sperm has aneuploidy, that is, sperm that has more or less of the usual number of 23 chromosomes."
• "The fault - called aneuploidy - is thought to be the main barrier that has prevented IVF success rates rising above 30 per cent."
• "Too many or too few chromosomes - known as aneuploidy - is common in cancer."