| 单词 | concave |
| 释义 | concave —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 ( < MF) < L concavus, hollow. See CON-, CAVE] |
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