trisomy 18

noun
\ -ˈā(t)-ˈtēn How to pronounce trisomy 18 (audio) \

Medical Definition of trisomy 18

: a congenital condition that is characterized especially by intellectual disability and by craniofacial, cardiac, gastrointestinal, and genitourinary abnormalities, is caused by trisomy of the human chromosome numbered 18, and is typically fatal especially within the first year of life

called also Edwards syndrome

Learn More About trisomy 18

Dictionary Entries Near trisomy 18

trisomy 13

trisomy 18

trisomy 21

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Cite this Entry

“Trisomy 18.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/trisomy%2018. Accessed 16 May. 2022.

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