convex

Borrowed from Middle French convexe, from Latin convexus (“arched”).

• (Received Pronunciation) IPA^(key): /ˈkɒn.vɛks/, /kɒnˈvɛks/, /kənˈvɛks/

• Audio (Southern England)

  (file)

• (General American) IPA^(key): /ˈkɑn.vɛks/, /kɑnˈvɛks/, /kənˈvɛks/

convex (comparative more convex, superlative most convex)

1. Curved or bowed outward like the outside of a bowl, circle, or sphere.
   • 1837, William Whewell, “Earliest Stages of Astronomy”, in History of the Inductive Sciences, from the Earliest to the Present Times. […], volume I, London: John W[illiam] Parker, […]; Cambridge, Cambridgeshire: J. and J. J. Deighton, →OCLC, book III (History of Greek Astronomy), section 9 (The Globular Form of the Earth), page 150:

     [D]rops of water naturally form themselves into figures with a convex surface; […]

2. (functional analysis, not comparable, of a real-valued function on the reals) having an epigraph that is a convex set.
3. (geometry, not comparable, of a polygon) having no internal angles greater than 180 degrees.
4. (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.

• concave

convex (plural convexes)

1. Any convex body or surface.
   • 1714, Royal Progress, Thomas Tickell:

     Half heaven's convex glitters with the flame.

2. (gambling) A playing card made convex for use in cheating.

   Coordinate term: concave

3. (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.

• John A. Simpson and Edmund S. C. Weiner, editors (1989), “convex”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, →ISBN.

Borrowed from Latin convexus.

• IPA^(key): (Central) [kumˈbɛks]
• IPA^(key): (Balearic, Valencian) [koɱˈvɛks]

convex (feminine convexa, masculine plural convexos, feminine plural convexes)

1. convex

   Antonym: còncau

• convexitat

• “convex” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.

Borrowed from French convexe, from Latin convexus.

• IPA^(key): /kɔnˈvɛks/

• Audio

  (file)

• Hyphenation: con‧vex
• Rhymes: -ɛks

convex (comparative convexer, superlative meest convex or convext)

1. convex

   Synonym: bolrond

   Antonym: concaaf

• biconvex
• convexiteit

• → Indonesian: konvèks

Borrowed from French convexe, from Latin convexus.

convex m or n (feminine singular convexă, masculine plural convecși, feminine and neuter plural convexe)

1. convex