Noun: nondisjunction ,nón-dis'júngk-shun
- Meiosis in which there is a failure of paired homologous chromosomes to separate; results in an abnormal number of chromosomes in the daughter cells
"Nondisjunction can lead to genetic disorders such as Down syndrome"
Derived forms: nondisjunctions
Type of: meiosis, reduction division
Encyclopedia: Nondisjunction, genetic