• synonyms


adjective Anatomy.
  1. shaped like a sesame seed, as certain small nodular bones and cartilages.
Show More

Origin of sesamoid

1690–1700; < Latin sēsamoīdēs < Greek sēsamoeidḗs like sesame seed. See sesame, -oid
Related formsin·ter·ses·a·moid, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sesamoid

Historical Examples of sesamoid

  • The pisiform is large and several other sesamoid bones occur.

    The Vertebrate Skeleton

    Sidney H. Reynolds

  • On the posterior surface of this extremity is found a sesamoid bone.

  • The patella, according to Strangeways, may be considered a sesamoid bone.

    Lameness of the Horse

    John Victor Lacroix

  • At the level of each metacarpo-phalangeal articulation are two sesamoid bones.

  • If the puncture involves the sesamoid sheath, the synovial fluid escapes.

    Special Report on Diseases of the Horse

    United States Department of Agriculture

British Dictionary definitions for sesamoid


adjective anatomy
  1. of or relating to various small bones formed in tendons, such as the patella
  2. of or relating to any of various small cartilages, esp those of the nose
Show More

Word Origin for sesamoid

C17: from Latin sēsamoīdēs like sesame (seed), from Greek
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

sesamoid in Medicine


  1. Resembling a sesame seed in size or shape.
  2. Of or relating to a sesamoid bone.
Show More
  1. A sesamoid bone or cartilage.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.