Category:Lunule

Lu"nule, n. Etym: [F., fr. L. lunula, dim. of luna moon.]

1. (Anat.)

Defn: Anything crescent-shaped; a crescent-shaped part or mark; a lunula, a lune.

2. (Chem.)

Defn: A lune. See Lune.

3. (Zoöl.) (a) A small or narrow crescent. (b) A special area in front of the beak of many bivalve shells. It sometimes has the shape of a double crescent, but is oftener heart- shaped. See Illust. of Bivalve.