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Concave vs Vacant - What's the difference?

concave | vacant | Related terms |

Concave is a related term of vacant.


As adjectives the difference between concave and vacant

is that concave is curved like the inner surface of a sphere or bowl while vacant is not occupied; empty.

As a noun concave

is a surface or curve.

As a verb concave

is to render , or increase the degree of concavity.

concave

English

Adjective

(en adjective)
  • curved like the inner surface of a sphere or bowl
  • (geometry, not comparable, of a polygon) not convex; having at least one internal angle greater than 180 degrees..
  • (functional analysis, not comparable, 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
  • * Shakespeare
  • as concave as a worm-eaten nut

    Antonyms

    * convex

    Derived terms

    * concavely * concaveness * concavity

    Noun

    (en noun)
  • A 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).
  • (industry) An element of a curved grid used to separate desirable material from tailings or chaff in mining and harvesting.
  • (surfing) An indentation running along the base of a surfboard, intended to increase lift.
  • (skateboarding) An indented area on the top of a skateboard, providing a position for foot placement and increasing board strength.
  • Verb

    (concav)
  • To render , or increase the degree of concavity.
  • Derived terms

    * concaver ----

    vacant

    English

    Adjective

    (-)
  • Not occupied; empty.
  • vacant lot
  • Showing no intelligence or interest.
  • ''a vacant stare

    Synonyms

    * (Not occupied) available, empty, free, uninhabited, unoccupied * (Showing no intelligence or interest) vacuous, thousand mile stare

    Derived terms

    * vacancy noun * vacantly adverb