different between concave vs pendentive
concave
English
Etymology
From Middle English concave, from Old French concave, from Latin concavus.
Pronunciation
- IPA(key): /?k??ke?v/
Adjective
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
Antonyms
- convex
Derived terms
- concavely
- concaveness
- concavity
Translations
Noun
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
Translations
Verb
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.
Derived terms
- concaver
Translations
French
Etymology
From Old French concave, borrowed from Latin concavus.
Adjective
concave (plural concaves)
- concave
Descendants
- ? Turkish: konkav
Further reading
- “concave” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).
Italian
Adjective
concave
- feminine plural of concavo
Latin
Adjective
concave
- vocative masculine singular of concavus
concave From the web:
- what concave means
- what concave on a skateboard
- what concave mirror
- what concave lens
- what concave lenses do
- what concave lens do
- what's concave and convex
- what concave polygon
pendentive
English
Etymology
From French pendentif.
Noun
pendentive (plural pendentives)
- (architecture) The concave triangular sections of vaulting that provide the transition between a dome and the square base on which it is set and transfer the weight of the dome.
See also
- squinch
Translations
Further reading
- pendentive on Wikipedia.Wikipedia
pendentive From the web:
- what pendentive mean
- what are pendentives and squinches associated with
- what is pendentive architecture
- what are pendentives and squinches
- what does pendentive mean
- what is pendentive in art
- what is pendentive in history
- what does pendentive meaning in architecture
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