concave

Meanings

Plural: concaves

Adjective

• curving inward

Adj

• Curved like the inner surface of a sphere or bowl.
• Not convex; having at least one internal angle greater than 180 degrees.
• Satisfying the property that all segments connecting two points on the function's graph lie below the function.
• Hollow; empty.

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.
• An element of a curved grid used to separate desirable material from tailings or chaff in mining and harvesting.
• An indentation running along the base of a surfboard, intended to increase lift.
• An indented area on the top of a skateboard, providing a position for foot placement and increasing board strength.
• A playing card made concave for use in cheating.

Verb

• To render concave, or increase the degree of concavity.

Synonyms

concavous

Antonyms

convex

Anagrams of concave