Jump to navigation Jump to search
From Middle English concave, from Old French concave, from Latin concavus.
- (UK) IPA(key): /ˈkɒn.keɪv/, /kɒnˈkeɪv/
- (US) IPA(key): /ˈkɑn.keɪv/, /kɑnˈkeɪv/, /kənˈkeɪv/
Audio (US) (file)
concave (comparative more concave, superlative most concave)
- 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.
- c. 1598–1600 (date written), William Shakespeare, “As You Like It”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act III, scene iv]:
- as concave […] as a worm-eaten nut
concave (plural concaves)
- 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).
- (manufacturing) 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.
- (gambling) A playing card made concave for use in cheating.
- Coordinate term: convex
A concave surface or curve
concave (third-person singular simple present concaves, present participle concaving, simple past and past participle concaved)
To render concave, or increase the degree of concavity.
Inherited from Old French concave, borrowed from Latin concavus.
concave (plural concaves)
- → Turkish: konkav
- “concave”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.
- English terms derived from Proto-Indo-European
- English terms derived from the Proto-Indo-European root *ḱewh₁-
- English terms inherited from Middle English
- English terms derived from Middle English
- English terms derived from Old French
- English terms derived from Latin
- English 2-syllable words
- English terms with IPA pronunciation
- English terms with audio links
- English lemmas
- English adjectives
- en:Functional analysis
- English terms with quotations
- English nouns
- English countable nouns
- English verbs
- French terms inherited from Old French
- French terms derived from Old French
- French terms borrowed from Latin
- French terms derived from Latin
- French terms with audio links
- French lemmas
- French adjectives
- Italian non-lemma forms
- Italian adjective forms
- Latin non-lemma forms
- Latin adjective forms