simian crease

noun
sim·​i·​an crease | \ ˈsim-ē-ən- How to pronounce simian crease (audio) \

Medical Definition of simian crease

: a deep crease extending across the palm that results from the fusion of the two normally occurring horizontal palmar creases and is found especially in individuals with Down syndrome

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Cite this Entry

“Simian crease.” The Merriam-Webster.com Medical Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/medical/simian%20crease. Accessed 10 December 2019.

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