hyponychium
noun
hy·po·nych·i·um
-ˈnik-ē-əm 
1
: the thickened layer of epidermis beneath the free end of a nail
2
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“Hyponychium.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/hyponychium. Accessed 19 Apr. 2024.
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