Bitangent

In mathematics, a bitangent to a curve C is a line L that touches C in two distinct points P and Q and that has the same direction to C at these points. That is, L is a tangent line at P and at Q. ==Bitangents of algebraic curves== In general, an algebraic curve will have infinitely many secant lines, but only finitely many bitangents. Bézout`s ....
Found on http://en.wikipedia.org/wiki/Bitangent

Bitangent

• (a.) Possessing the property of touching at two points. • (n.) A line that touches a curve in two points.
Found on http://thinkexist.com/dictionary/meaning/bitangent/

Bitangent

Bi·tan'gent adjective [ Prefix bi- + tangent .] (Geom.) Possessing the property of touching at two points. -- noun A line that touches a curve in two points.
Found on http://www.encyclo.co.uk/webster/B/58
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