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[kal-key-nee-uh s] /kælˈkeɪ ni əs/
noun, plural calcanei
[kal-key-nee-ahy] /kælˈkeɪ niˌaɪ/ (Show IPA)
Anatomy. the largest tarsal bone, forming the prominence of the heel.
Zoology. the corresponding bone in other vertebrates.
Also, calcaneum.
Also called heel bone.
Origin of calcaneus
1920-25; < Late Latin: heel, noun use of calcāneus of the heel; see calcaneum
Related forms
calcaneal, calcanean, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for calcaneus
Historical Examples
  • If there is a bony projection from the calcaneus, it should be shaved off with the chisel.

    Manual of Surgery Alexis Thomson and Alexander Miles
  • A second diagnostic point is the abnormal position of the calcaneus and scaphoid with relation to the malleoli and astragalus.

  • The tendo-calcaneus is detached from the calcaneus, the bursa dissected out, and the tendon replaced.

    Manual of Surgery Alexis Thomson and Alexander Miles
British Dictionary definitions for calcaneus


noun (pl) -nei (-nɪˌaɪ), -nea (-nɪə)
the largest tarsal bone, forming the heel in man Nontechnical name heel bone
the corresponding bone in other vertebrates
Derived Forms
calcaneal, calcanean, adjective
Word Origin
C19: from Late Latin: heel, from Latin calx heel
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
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Word Origin and History for calcaneus

from Latin (os) calcaneum "bone of the heel," from calcem (nominative calx (1)) "heel."

Online Etymology Dictionary, © 2010 Douglas Harper
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calcaneus in Medicine

calcaneus cal·ca·ne·us (kāl-kā'nē-əs) or cal·ca·ne·um (-nē-əm)
n. pl. cal·ca·ne·i (-nē-ī') or cal·ca·ne·a (-nē-ə)
The quadrangular bone at the back of the tarsus, the largest of the tarsal bones. Also called heel bone.

cal·ca'ne·al adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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