conicoid

[ kon-i-koid, koh-ni- ]
/ ˈkɒn ɪˌkɔɪd, ˈkoʊ nɪ- /

noun Geometry.

a quadric, especially a hyperboloid, paraboloid, or ellipsoid.

Origin of conicoid

First recorded in 1860–65; conic + -oid