| 单词 | concave |
| 释义 | Word Frequency concave(ˈkɒnkeɪv, kɒnˈkeɪv) adjective 1. curving inwards 2. 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 3. mathematics (of a polygon) containing an interior angle greater than 180° 4. an obsolete word for hollow verb Compare convex 5. (transitive) to make concave Derived forms concavely (ˈconcavely) adverb concaveness (ˈconcaveness) noun Word origin C15: from Latin concavus arched, from cavus hollow |
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