Definition of Concave

1. Adjective. Curving inward.

Definition of Concave

1. a. Hollow and curved or rounded; vaulted; -- said of the interior of a curved surface or line, as of the curve of the of the inner surface of an eggshell, in opposition to convex; as, a concave mirror; the concave arch of the sky.

2. n. A hollow; an arched vault; a cavity; a recess.

3. v. t. To make hollow or concave.

Definition of Concave

1. Adjective. curved like the inner surface of a sphere or bowl ¹

2. Noun. A concave surface or curve. ¹

3. Noun. The vault of the sky. ¹

4. Noun. One of the celestial spheres of the Ptolemaic or geocentric model of the world. ¹

5. Noun. (industry) An element of a curved grid used to separate desirable material from tailings or chaff in mining and harvesting. ¹

6. Noun. (surfing) An indentation running along the base of a surfboard, intended to increase lift. ¹

7. Noun. (skateboarding) An indented area on the top of a skateboard, providing a position for foot placement and increasing board strength. ¹

8. Verb. To render concave, or increase the degree of concavity. ¹

¹ Source:

Definition of Concave

1. to make concave (curving inward) [v -CAVED, -CAVING, -CAVES]

Medical Definition of Concave

1. Having a depressed or hollowed surface. Origin: L. Concavus, arched or vaulted (05 Mar 2000)

Concave Pictures

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Lexicographical Neighbors of Concave

concave (current term)
concave lens
concave mirror
concave polygon
concave polyhedron
concave shape

Literary usage of Concave

Below you will find example usage of this term as found in modern and/or classical literature:

1. Elements of the Differential and Integral Calculus by William Anthony Granville (1904)
"Ans. concave downwards everywhere. А та. concave downwards to the left and ... Ans. concave upwards to the left of z = 2, concave downwards between x = 2 ..."

2. A First Course in Physics by Robert Andrews Millikan, Henry Gordon Gale (1906)
"IMAGES IN concave MIRRORS 538. Image of object nearer to a concave mirror than its ... Let a pencil point be placed in contact with a concave mirror. ..."

3. Higher Mathematics for Students of Chemistry and Physics: With Special by Joseph William Mellor (1902)
"The point of inflection (or inflexion) marks the spot where the curve passes from a convex to a concave, or from a concave to a convex configuration with ..."

4. A Treatise on Optics by David Brewster (1838)
"Refraction of Light through Convex and concave Surfaces. (43. ... 26. for the ray HR, and of tracing one entering a concave surface of a rare medium, ..."

5. The Stones of Venice by John Ruskin (1851)
"Sofia at Padua, that on the right from the cortile of St. Ambrogio at Milan They both have the concave angle truncation; but being of date prior to the time ..."

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