# ruled surface

ruled surface
noun
mathematics : a surface generated by a moving straight line

* * *

Geom.
a surface that can be generated by a straight line, as a cylinder or cone.
[1860-65]

* * *

ruled surface «roold»,
Geometry. a surface generated by the motion of a straight line so that the surface may be wholly covered by a group of lines. A cone or a cylinder is a ruled surface.

Useful english dictionary. 2012.

### Look at other dictionaries:

• ruled surface — n. Geom. a surface that is the locus of all points on a moving straight line, as a plane, cone, etc …   English World dictionary

• Ruled surface — A hyperboloid of one sheet is a doubly ruled surface: it can be generated by either of two families of straight lines. In geometry, a surface S is ruled if through every point of S there is a straight line that lies on S. The most familiar… …   Wikipedia

• Ruled surface — Rule Rule, n. [Webster 1913 Suppl.] Syn: regulation; law; precept; maxim; guide; canon; order; method; direction; control; government; sway; empire. [1913 Webster] Rule Rule, v. t. [imp. & p. p. {Ruled}; p. pr. & vb. n. {Ruling}.] [Cf. OF. riuler …   The Collaborative International Dictionary of English

• ruled surface — noun Date: 1862 a surface generated by a moving straight line with the result that through every point on the surface a line can be drawn lying wholly in the surface …   New Collegiate Dictionary

• ruled surface — Geom. a surface that can be generated by a straight line, as a cylinder or cone. [1860 65] * * * …   Universalium

• doubly ruled surface — noun mathematics : a ruled surface with two systems of rulings or generators; specifically : a quadric surface …   Useful english dictionary

• Ruled — Rule Rule, n. [Webster 1913 Suppl.] Syn: regulation; law; precept; maxim; guide; canon; order; method; direction; control; government; sway; empire. [1913 Webster] Rule Rule, v. t. [imp. & p. p. {Ruled}; p. pr. & vb. n. {Ruling}.] [Cf. OF. riuler …   The Collaborative International Dictionary of English

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