When a cell or even an individual has missing chromosomes or extra chromosomes or even parts of a chromosome this is called a aneuploid and is segmental.

ANEUPLOID: "Aneuploid is segmental and is a cell or individual with missing or extra chromosomes."

Link to This Definition

Did you find this definition of ANEUPLOID helpful? You can share it by copying the code below and adding it to your blog or web page.
Edited and fact checked by Pam: Google +