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[muh-lee-uh-luh s] /məˈli ə ləs/
noun, plural malleoli
[muh-lee-uh-lahy] /məˈli əˌlaɪ/ (Show IPA).
the bony protuberance on either side of the ankle, at the lower end of the fibula or of the tibia.
Origin of malleolus
1685-95; < Latin: small hammer, mallet, equivalent to malle(us) hammer + -olus -ole1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for malleolus


noun (pl) -li (-ˌlaɪ)
either of two rounded bony projections of the tibia and fibula on the sides of each ankle joint
Derived Forms
malleolar, adjective
Word Origin
C17: diminutive of Latin malleus hammer
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 malleolus

bone knob at the ankle, 1690s, from Latin malleolus, diminutive of malleus "a hammer" (see mallet). Anatomical use is said to date to Andreas Vesalius (1514-1564).

Online Etymology Dictionary, © 2010 Douglas Harper
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malleolus in Medicine

malleolus mal·le·o·lus (mə-lē'ə-ləs)
n. pl. mal·le·o·li (-lī')
A rounded bony prominence, such as those on either side of the ankle joint.

mal·le'o·lar (-lər) 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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