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conoid

[koh-noid]
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adjective
  1. Also co·noi·dal. resembling a cone in shape; cone-shaped.
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noun
  1. a geometrical solid formed by the revolution of a conic section about one of its axes.
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Origin of conoid

From the Greek word kōnoeidḗs, dating back to 1650–60. See cone, -oid
Related formsco·noi·dal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for conoid

Historical Examples

  • Its conoid shape may class it with the one shown in Fig. 24.

    The Archaeology of the Yakima Valley

    Harlan Ingersoll Smith

  • From some experiments I made myself a score of years ago, I am inclined to prefer a plane surface for the conoid to work upon.

  • The head is grooved, circular in cross section, and has conoid ends.

  • Down the mountain slopes, like a whirl of shining dust blown before the wind, a crimson, conoid cloud came dancing.


British Dictionary definitions for conoid

conoid

noun
  1. a geometric surface formed by rotating a parabola, ellipse, or hyperbola about one axis
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adjective Also: conoidal (kəʊˈnɔɪdəl)
  1. conical, cone-shaped
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Derived Formsconoidally, adverb

Word Origin

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