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# curvilinear

### or curvilineal

[kur-vuh-lin-ee-er] /ˌkɜr vəˈlɪn i ər/
1.
consisting of or bounded by curved lines:
a curvilinear figure.
2.
forming or moving in a curved line.
3.
formed or characterized by curved lines.
Origin of curvilinear
1700-1710
1700-10; < Latin curv(us) curve + -i- + linear
Related forms
curvilinearity
[kur-vuh-lin-ee-ar-i-tee] /ˌkɜr vəˌlɪn iˈær ɪ ti/ (Show IPA),
noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for curvilinear
Contemporary Examples
• Silvestre Varela was hurtling toward the U.S. goal when Ronaldo fed him a pass of curvilinear purity.

Historical Examples
• There are the degrees of direction of line, curvilinear or angular.

Walter Crane
• The same principle is true of designs upon the curvilinear plan.

Walter Crane
• It would be the same with the quadrature of curvilinear areas.

Auguste Comte
• Who can decide between rectilinear and curvilinear geometry?

Honor de Balzac
• Who shall decide between rectalinear and curvilinear geometry?

Honore de Balzac
• Out of "Brandt" I defy you to get any curvilinear suggestion.

William J. Locke
• Its germ was the Cartesian vortices, suggested by the curvilinear forms of iron filings in the vicinity of magnetic poles.

John William Draper
• It is possible to add to the work in pure geometry some work in the mensuration of the curvilinear figures shown in these designs.

David Eugene Smith
• The curvilinear roof gives beauty to the design as well as affording more head room inside than the ordinary straight rafter.

George E. Woodward
British Dictionary definitions for curvilinear

## curvilinear

/ˌkɜːvɪˈlɪnɪə/
1.
consisting of, bounded by, or characterized by a curved line
2.
along a curved line: curvilinear motion
3.
(maths) (of a set of coordinates) determined by or determining a system of three orthogonal surfaces
Derived Forms
curvilinearity, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for curvilinear

1710, from curvi-, comb. form of Latin curvus (see curve (v.)) + linearis, from linea "line" (see line (n.)). Earlier was curvilineal (1650s).

Online Etymology Dictionary, © 2010 Douglas Harper
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curvilinear in Science
 curvilinear   (kûr'və-lĭn'ē-ər)    Formed, bounded, or characterized by curved lines.
The American Heritage® Science Dictionary