( n. )
The solid generated by the rotation of a parabola about its axis; any surface of the second order whose sections by planes parallel to a given line are parabolas.
( n. )
The solid generated by the rotation of a parabola about its axis; any surface of the second order whose sections by planes parallel to a given line are parabolas.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012