English Dictionary

Winding or circling round a center or pole and gradually receding from it; as, the spiral curve of a watch spring.
Source : opted (146676)  - auto

Winding round a cylinder or imaginary axis, and at the same time rising or advancing forward; winding like the thread of a screw; helical.
Source : opted (146677)  - auto

Of or pertaining to a spiral; like a spiral.
Source : opted (146678)  - auto

A plane curve, not reentrant, described by a point, called the generatrix, moving along a straight line according to a mathematical law, while the line is revolving about a fixed point called the pole. Cf. Helix.
Source : opted (146679)  - auto

Anything which has a spiral form, as a spiral shell.
Source : opted (146680)  - auto