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a. A line that deviates from straightness in a smooth, continuous fashion.
b. A surface that deviates from planarity in a smooth, continuous fashion.
c. Something characterized by such a line or surface, especially a rounded line or contour of the human body.
2. A relatively smooth bend in a road or other course.
a. A line representing data on a graph.
b. A trend derived from or as if from such a graph: "Once again, the politicians are behind the curve" (Ted Kennedy).
4. A graphic representation showing the relative performance of individuals as measured against each other, used especially as a method of grading students in which the assignment of grades is based on predetermined proportions of students.
5. Mathematics
a. The graph of a function on a coordinate plane.
b. The intersection of two surfaces in three dimensions.
c. The graph of the solutions to any equation of two variables.
6. Baseball A curve ball.
7. Slang Something that is unexpected or designed to trick or deceive.
v. curved, curv·ing, curves
To move in or take the shape of a curve: The path curves around the lake.
1. To cause to curve.
2. Baseball To pitch (a ball) with a curve.
3. To grade (students, for example) on a curve.

[From Middle English, curved, from Latin curvus; see sker- in Indo-European roots. N., sense 6, short for curve ball.]

curv′ed·ness n.
curv′y adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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The fourth sort of quality is figure and the shape that belongs to a thing; and besides this, straightness and curvedness and any other qualities of this type; each of these defines a thing as being such and such.
the principal curvatures [k.sub.1] and [k.sub.2], the shape index S and the curvedness index C.
A seller embeds a unique watermark of the copyright information into the curvedness of the vertices based on a non-uniform quantization, and encrypts an object with a unique watermark.