nondisjunction

[ non-dis-juhngk-shuhn ]

noun

, Biology.

1. the failure of chromosomes to separate and segregate into daughter cells at division.

nondisjunction

/ ˌnɒndɪsˈdʒʌŋkʃən /

noun

1. the failure of paired homologous chromosomes to move to opposite poles of the cell during meiosis

Word History and Origins

Origin of nondisjunction¹

First recorded in 1910–15; non- + disjunction