What does Aneuploidy mean?

Aneuploidy meaning in Medical Dictionary

a disorder by which an individual has one or a couple of chromosomes above or underneath the regular chromosome number. For example, three copies of chromosome21, which will be characteristic of Down problem, is a form of aneuploidy.

Aneuploidy meaning in Etymology Dictionary

abnormal wide range of chromosomes, 1934, from aneuploid (1931), contemporary Latin, coined 1922 by G. T

Aneuploidy meaning in General Dictionary

an abnormality concerning a chromosome number which is not a defined multiple for the haploid number (one chromosome set is incomplete)