quadricone

quadricone

(ˈkwɒdrɪˌkəʊn)
n
(Mathematics) geometry obsolete a quadric surface swept out by a straight line that passes through a fixed point such that no straight line can intersect it at more than two points
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014