Top: a spoon with its convex
Bottom: a spoon with its concave
set. For any points x
within the set, the connecting line lies within the set.
Borrowed from Middle French convexe, from Latin convexus ("arched").
convex (comparative more convex, superlative most convex)
- curved or bowed outward like the outside of a bowl or sphere or circle
- 1837, William Whewell, History of the Inductive Sciences
- Drops of water naturally form themselves into figures with a convex surface.
- (mathematics, not comparable, of a set in Euclidean space) arranged such that for any two points in the set, a straight line between the two points is contained within the set.
- (geometry, not comparable, of a polygon) having no internal angles greater than 180 degrees.
- (functional analysis, not comparable, of a real-valued function on the reals) having an epigraph which is a convex set.
curved or bowed outward like the outside of a bowl or sphere or circle
convex (plural convexes)
- Any convex body or surface.
- 1714, Thomas Tickell, Royal Progress
- Half heaven's convex glitters with the flame.
- (gambling) A playing card made convex for use in cheating.
- Coordinate term: concave
- (gambling) A small convex mirror used to cheat by observing other players' cards.
- Synonym: shiner
- 2019, John Philip Quinn, Fools of Fortune; or, Gambling and Gamblers
- Of all the devices for defrauding at poker, the "shiner," or "convex" [...] Modern convexes are also considerably larger than those of former days.
Borrowed from Latin convexus.
convex (feminine convexa, masculine plural convexos, feminine plural convexes)
Borrowed from French convexe, from Latin convexus.
- (key): /k?n'v?ks/
- Hyphenation: con?vex
- Rhymes: -?ks
convex (comparative convexer, superlative meest convex or convext)
- Synonym: bolrond
- Antonym: concaaf
From French convexe, from Latin convexus.
convex m or n (feminine singular convex?, masculine plural convec?i, feminine and neuter plural convexe)