semilunar fold

noun

Medical Definition of semilunar fold

: a small fold of membrane in the inner corner of the eye that is a vestige of a nictitating membrane

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Cite this Entry

“Semilunar fold.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/semilunar%20fold. Accessed 22 Jan. 2021.

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