trisomy 18

noun

: 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

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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 14 Apr. 2024.

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