[adjective, verb kon-keyv, kon-keyv; noun kon-keyv] /adjective, verb kɒnˈkeɪv, ˈkɒn keɪv; noun ˈkɒn keɪv/
curved like a segment of the interior of a circle or sphere; and curved.
Compare (def 1).
Geometry. (of a polygon) having at least one interior angle greater than 180°.
a concave surface, part, line, or thing.
Machinery. a concave piece, as one against which a drum rotates.
verb (used with object), concaved, concaving.
to make concave.
(physics) having one or two surfaces curved or ground in the shape of a section of the interior of a sphere, paraboloid, etc: a concave lens
(maths) (of a polygon) containing an interior angle greater than 180°
an obsolete word for hollow
(transitive) to make concave
early 15c., from Old French concave (14c.) or directly from Latin concavus “hollow, arched, vaulted, curved,” from com-, intensive prefix (see com-), + cavus “hollow” (see cave (n.)).
concave con·cave (kŏn-kāv’, kŏn’kāv’)
Curved like the inner surface of a sphere. n.
A concave surface, structure, or line.
Curved inward, like the inside of a circle or sphere.
[kon-kav-i-tee] /kɒnˈkæv ɪ ti/ noun, plural concavities for 2. 1. the state or quality of being . 2. a surface or thing; cavity. /kɒnˈkævɪtɪ/ noun (pl) -ties 1. the state or quality of being concave 2. a concave surface or thing; cavity n. c.1400, from Old French concavité “hollow, concavity” (14c.) or directly from Latin […]
[kon-key-voh-kon-keyv] /kɒnˈkeɪ voʊ kɒnˈkeɪv/ adjective 1. concave on both sides. /kɒnˌkeɪvəʊkɒnˈkeɪv/ adjective 1. (esp of a lens) having both sides concave; biconcave concavo-concave con·ca·vo-con·cave (kŏn-kā’vō-kŏn-kāv’) adj. Of or being biconcave.
- Concavo-concave lens
concavo-concave lens n. See biconcave lens.
[kon-key-voh-kon-veks] /kɒnˈkeɪ voʊ kɒnˈvɛks/ adjective 1. Also, convexo-concave. concave on one side and convex on the other. 2. Optics. pertaining to or noting a lens in which the concave face has a greater degree of curvature than the convex face. adjective 1. having one side concave and the other side convex 2. (of a lens) […]