Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Of or designating any of certain small modular bones or cartilages that develop in a tendon or in the capsule of a joint.
  • noun A sesamoid bone or cartilage.

from The Century Dictionary.

  • Having the shape of a grain of sesame: especially applied in anatomy to small independent osseous or cartilaginous bodies occurring in tendinous structures.
  • noun In anatomy, a bone developed in the tendon of a muscle at or near a joint; a scleroskel-etal ossification, usually of a nodular shape.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Resembling in shape the seeds of sesame.
  • adjective (Anat.) Of or pertaining to the sesamoid bones or cartilages; sesamoidal.
  • adjective (Anat.) small bones or cartilages formed in tendons, like the patella and pisiform in man.
  • noun (Anat.) A sesamoid bone or cartilage.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Resembling a sesame seed in size or shape.
  • adjective Of or relating to a sesamoid bone.
  • noun anatomy A sesamoid bone or sesamoid cartilage.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun any of several small round bones formed in a tendon where it passes over a joint

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Greek sēsamoeidēs, shaped like a sesame seed : sēsamon, sēsamē, sesame; see sesame + -oeidēs, -oid.]

Examples

  • Open Cup semifinal Wednesday, and at some point, apparently fractured the sesamoid bone in his right foot -- the same ailment that required surgery in preseason and prevented him from playing in a league match until July 31.

    D.C. United's Marc Burch sidelined again

  • Even after Ruffian broke the sesamoid bones in her foot 3/8s of a mile into the race, she ran as hard as she could for another fifty yards, breaking the hearts of everyone who saw the race.

    Jane Smiley: Match Race

  • Barbaro's cannon bone, sesamoid, and long pastern bone were fractured and he dislocated his ankle joint.

    USATODAY.com - Surgery complete, Barbaro and his sport wait

  • If you watch the replays you'll see that when she switched leads to her right front and landed awkwardly under fatigue, she fractured her cannon bone and additionally she fractured her sesamoid.

    CNN Transcript May 4, 2008

  • Uhlaender, who was introduced to skeleton by friend and bobsledder Sara Sprung, finished sixth overall in her rookie World Cup season last year, competing on two broken bones in her foot — a partially fractured talus in her left ankle that wasn't diagnosed for nearly two years and a broken sesamoid near her left toe.

    USATODAY.com - Uhlaender 'riding the wave' in skeleton

  • Did these changes in dentition precede the development of the modified radial sesamoid bone or were the changes in dentition secondary.

    Welcome Back - The Panda's Thumb

  • John even knew the name of their nose bone, the nasal sesamoid, and he told me some of the many diseases pigs are heir to, scabies and lice and ticks and liver flukes, worms of the kidneys and worms of the lungs, tapeworms, rabies…

    Our American King

  • John even knew the name of their nose bone, the nasal sesamoid, and he told me some of the many diseases pigs are heir to, scabies and lice and ticks and liver flukes, worms of the kidneys and worms of the lungs, tapeworms, rabies…

    Our American King

  • You can see the X-rays on the Web, of bones crisscrossed by dark fracture lines like weathered boulders, and even if you can't name the parts — pastern, cannon, sesamoid — it's obvious that something ghastly happened.

    Can Barbaro Beat the Odds?

  • John even knew the name of their nose bone, the nasal sesamoid, and he told me some of the many diseases pigs are heir to, scabies and lice and ticks and liver flukes, worms of the kidneys and worms of the lungs, tapeworms, rabies…

    Our American King

Comments

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  • "Having the shape of a grain of sesame: especially applied in anatomy to small independent osseous or cartilaginous bodies occurring in tendinous structures."

    -- from The Century Dictionary and Cyclopedia

    February 26, 2015

  • Related to tahinite.

    March 2, 2015