- 18.232.188.251

Tan·gent, a. Touching; touching at a single point; specifically Geom. meeting a curve or surface at a point and having at that point the same direction as the curve or surface; -- said of a straight line, curve, or surface; as, a line tangent to a curve; a curve tangent to a surface; tangent surfaces.

**Tangent plane** Geom., a plane which touches a surface in a point or line.

**Tangent scale** Gun., a kind of breech sight for a cannon.

**Tangent screw** Mach., an endless screw; a worm.

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