Meaning of CONVEX in English


I. (ˈ)kän|veks, kənˈv- adjective

Etymology: Middle French or Latin; Middle French convexe, from Latin convexus vaulted, arched, convex, concave, from com- + -vexus (akin to vacillare to sway, stagger) — more at vacillate

1. : curved or rounded as the exterior or a section of a spherical or circular form — used of a spherical surface or curved line viewed from without; opposed to concave

2. : arched up : bulging out — used of that side of a curve or surface on which the tangent line or plane lies or on which normals at neighboring points diverge; opposed to concave

• con·vex·ly adverb

• con·vex·ness noun -es

II. (ˈ)kän|v- noun

( -es )

archaic : a convex body, surface, or part (as a vault or arch seen from without) ; specifically : the vault of the sky

half heaven's convex glitters with the flame — Thomas Tickell

III. ˈkänˌv-, kənˈv- verb

( -ed/-ing/-es )

: to bend convexly : bow outward in a convex curve

IV. adjective

1. : being a continuous function or part of a continuous function with the property that a line joining any two points on its graph lies on or above the graph


a. of a set of points : containing all points in a line joining any two constituent points

b. of a geometric figure : comprising a convex set when combined with its interior

a convex polygon


Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.