non-disjunctional
/ˌnɒndɪsˈdʒʌŋ(k)ʃ(ə)n(ə)l/ /ˌnɒndɪsˈdʒʌŋ(k)ʃən(ə)l/Genetics and Cell Biol.
adjective
Relating to, involving, or resulting from non-disjunction.
Origin
Early 20th century; earliest use found in Journal of Experimental Zoology. From non-disjunction + -al.