convex

adjective

con·​vex kän-ˈveks How to pronounce convex (audio) ˈkän-ˌveks How to pronounce convex (audio)
kən-ˈveks
Synonyms of convexnext
1
a
: curved or rounded outward like the exterior of a sphere or circle
b
: 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
2
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

Examples of convex in a Sentence

Recent Examples on the Web
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Second, the two sides must be readily distinguishable from each other, usually by applying color or markings to one side, although in rare cases they can be distinguished by shape, with one side being convex and the other being concave. ArsTechnica, 3 Apr. 2026 These patients are more likely to require convex barriers. Diego Schaps, STAT, 1 Apr. 2026 Next, tape a piece of plastic food wrap over the convex side. Staff Author, Martha Stewart, 31 Mar. 2026 The panel below presents the speedometer, tachometer, odometer, and G Force measurements, which appear as separate gauges thanks to the top display’s three cutouts, each covered by its own convex glass lens and surrounded by a ring of anodized aluminum. Viju Mathew, Robb Report, 9 Feb. 2026 See All Example Sentences for convex

Word History

Etymology

Middle French or Latin; Middle French convexe, from Latin convexus vaulted, concave, convex, from com- + -vexus; perhaps akin to Latin vehere to carry — more at way

First Known Use

1571, in the meaning defined at sense 1a

Time Traveler
The first known use of convex was in 1571

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Cite this Entry

“Convex.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/convex. Accessed 8 Apr. 2026.

Kids Definition

convex

adjective
con·​vex kän-ˈveks How to pronounce convex (audio) kən- How to pronounce convex (audio)
ˈkän-ˌveks
: curved or rounded like the outside of a sphere or circle
a convex lens
convexity
kən-ˈvek-sət-ē
kän-
noun

Medical Definition

convex

adjective
: curved or rounded like the exterior of a sphere or circle
convex lenses are used to correct for farsightedness
convexity noun
plural convexities

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