• synonyms


adjective Anatomy.
  1. being in the shape of a cup; cup-shaped.
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Origin of cotyloid

1750–60; < Greek kotyloeidḗs, equivalent to kotýl(ē) cup + -oeidēs -oid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for cotyloid

Historical Examples of cotyloid

  • They are sucked up by two cupping vessels, (“cotyloid”—cup-like—cavities,) and held there as long as you live, and longer.

    The Autocrat of the Breakfast-Table

    Oliver Wendell Holmes

  • In Ornithorhynchus the cotyloid or os acetabuli is a larger element of the girdle than is the pubis.

  • Very often a fourth pelvic element, the acetabular or cotyloid bone, occurs.

    The Vertebrate Skeleton

    Sidney H. Reynolds

British Dictionary definitions for cotyloid



    1. shaped like a cup
    2. of or relating to the acetabulum
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  1. a small bone forming part of the acetabular cavity in some mammals
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Word Origin for cotyloid

C18: from Greek kotuloeidēs cup-shaped, from kotulē a cup
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

cotyloid in Medicine


  1. Shaped like a cup.
  2. Relating to the acetabulum.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.