Definition: The Hebrew word "aneuploidy" refers to a cell with two normal copies of each sex chromosome (2n and 2h). The definition goes as follows: Anneuploidy occurs in an organism when one or more chromosomes have undergone changes that alter their number or structure, leading to abnormalities. For instance, a single copy of the sex chromosomes may become two, resulting in an abnormal sex pattern. The word "aneuploid" is derived from the Hebrew words "aneu" (2n) and "plad", which mean "two copies," "normal," and "sex," respectively. It is used to describe cells with an abnormal number of chromosomes that are not normal or unpaired, thus contributing to abnormalities in genetics.