lunula /lu·nu·la/ (loo´nu-lah) pl. lu´nulae [L.] a small, crescentic or moon-shaped area or structure, e.g., the white area at the base of the nail of a finger or toe, or one of the segments of the semilunar valves of the heart.
lunula
lu·nu·la (l n y -l)n. pl. lu·nu·lae (-l   ) A small crescent-shaped structure or marking, especially the proximal region at the base of a fingernail that resembles a half-moon. |
lunula
[lo̅o̅n′yələ] pl. lunulae
Etymology: L, luna, moon
a semilunar structure, such as the crescent-shaped pale area at the base of a fingernail or toenail.
lunula
pl. lunulae [L.] a small, crescentic or moon-shaped area or structure, e.g. the segments of the semilunar valves of the heart.
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