SPIRAL


Meaning of SPIRAL in English

( a. )

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.

Webster's Revised Unabridged English Dictionary.      Пересмотренный полный словарь английского языка Webster.