concave
From WikiWord, the free dictionary
/ˈkɒŋkeɪv/
English
Definitions
noun
- A concave surface or curve.
- The vault of the sky.
- One of the celestial spheres of the Ptolemaic or geocentric model of the world.“Aristotle makes [Fire] to move to the concave of the Moon. - Thomas Salusbury (1661).”
- An element of a curved grid used to separate desirable material from tailings or chaff in mining and harvesting.
verb
- To render concave, or increase the degree of concavity.
adjective
- Curved like the inner surface of a sphere or bowl
- (of a polygon) not convex; having at least one internal angle greater than 180 degrees.
- (of a real-valued function on the reals) satisfying the property that all segments connecting two points on the function's graph lie below the function.
- Hollow; empty
Related words
Synonyms
biconcaveconcavo-convexplanoconcaveindentedbursiformrecessedsaclikeacetabularcupularcupulatecotyloidumbilicatecup-shapeddisheddepressedconcavo-concave