perionyx

perionyx
Remnant of the eponychium remaining in the narrow fold overlapping the proximal part of the lunula found beginning in the eighth month of pregancy and remaining throughout life. [peri- + G. onyx, nail]

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peri·on·yx .per-ē-'än-iks n the persistent layer of stratum corneum at the base of a fingernail or toenail

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peri·onyx (per″e-oґniks) [peri- + onyx] [TA] a relic of the eponychium persisting as a band across the root of the nail, first seen in the eighth month of fetal life.

Medical dictionary. 2011.

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