'Spiral of Archimedes' definitions:

Definition of 'Spiral of Archimedes'

From: GCIDE
  • Spiral \Spi"ral\, n. [Cf. F. spirale. See Spiral, a.]
  • 1. (Geom.) 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. [1913 Webster]
  • 2. Anything which has a spiral form, as a spiral shell. [1913 Webster]
  • Equiangular spiral,a plane curve which cuts all its generatrices at the same angle. Same as {Logarithmic spiral}, under Logarithmic.
  • Spiral of Archimedes, a spiral the law of which is that the generatrix moves uniformly along the revolving line, which also moves uniformly. [1913 Webster]