Definition of convex
1a
: 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
2a
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
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MerriamWebster unabridged
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Time Traveler for convex
The first known use of convex was in 1571
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