— concavely , adv. — concaveness , n.
adj. , v. /kon kayv", kon"kayv/ ; n. /kon"kayv/ , adj., n., v., concaved, concaving .
adj.
1. curved like a segment of the interior of a circle or hollow sphere; hollow and curved. Cf. convex (def. 1).
2. Geom. (of a polygon) having at least one interior angle greater than 180°.
3. Obs. hollow.
n.
4. a concave surface, part, line, or thing.
5. Mach. a concave piece, as one against which a drum rotates.
v.t.
6. to make concave.
[ 1375-1425; late ME ( concavus, hollow. See CON-, CAVE ]