simian crease

noun

: 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

Cite this Entry

“Simian crease.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/simian%20crease. Accessed 11 Mar. 2025.

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