nondisjunction

noun

non·​dis·​junc·​tion ˌnän-dis-ˈjəŋ(k)-shən How to pronounce nondisjunction (audio)
: 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
nondisjunctional adjective

Word History

Etymology

International Scientific Vocabulary

First Known Use

1913, in the meaning defined above

Time Traveler
The first known use of nondisjunction was in 1913

Dictionary Entries Near nondisjunction

Cite this Entry

“Nondisjunction.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nondisjunction. Accessed 21 Feb. 2024.

Medical Definition

nondisjunction

noun
non·​dis·​junc·​tion ˌnän-dis-ˈjəŋ(k)-shən How to pronounce nondisjunction (audio)
: 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
nondisjunctional adjective

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