aneuploidy definition genetics
aneuploid. adj. 1. (Genetics) (of polyploid cells or organisms) having a chromosome number that is not an exact multiple of the haploid number, caused by one chromosome set being incomplete.n. 2. (Genetics) a cell or individual of this type.nÂ·euÂ·ploid. adj. Having a chromosome number that is not a multiple of the haploid number for the species. n. A cell or an organism characterized by an aneuploid chromosome number.