trisomic

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adjective

tri·​so·​mic (ˈ)trī-ˈsō-mik How to pronounce trisomic (audio)
: relating to, caused by, or characterized by trisomy
trisomic cells

trisomic

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noun

: a trisomic individual

trisomy

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noun

tri·​so·​my ˈtrī-ˌsō-mē How to pronounce trisomy (audio)
plural trisomies
: the condition (as in Down syndrome) of having one or a few chromosomes triploid in an otherwise diploid set

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Cite this Entry

“Trisomic.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/trisomic. Accessed 6 Jul. 2026.

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