nondisjunction

noun non·dis·junc·tion \ ˌnän-dis-ˈjəŋ(k)-shən \

Definition of nondisjunction

: failure of homologous chromosomes or sister chromatids to separate subsequent to metaphase in meiosis or mitosis so that one daughter cell has both and the other neither of the chromosomes

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nondisjunctional

play \ˌnän-dis-ˈjəŋ(k)-shnəl, -shə-nᵊl\ adjective

Origin and Etymology of nondisjunction

International Scientific Vocabulary

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First Known Use: 1913

in the meaning defined above

See Words from the same year

Medical Dictionary

nondisjunction

noun non·dis·junc·tion \ ˌnän-dis-ˈjəŋ(k)-shən \

medical Definition of nondisjunction

: failure of homologous chromosomes or sister chromatids to separate subsequent to metaphase in meiosis or mitosis so that one daughter cell has both and the other neither of the chromosomes

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