[ koh-noid ]
/ ˈkoʊ nɔɪd /


Also co·noi·dal. resembling a cone in shape; cone-shaped.


a geometrical solid formed by the revolution of a conic section about one of its axes.

Origin of conoid

From the Greek word kōnoeidḗs, dating back to 1650–60. See cone, -oid

Related forms

co·noi·dal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for conoid

British Dictionary definitions for conoid


/ (ˈkəʊnɔɪd) /


a geometric surface formed by rotating a parabola, ellipse, or hyperbola about one axis

adjective Also: conoidal (kəʊˈnɔɪdəl)

conical, cone-shaped

Derived Forms

conoidally, adverb

Word Origin for conoid

C17: from Greek kōnoeidēs, from kōnos cone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012