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[ing-kuh s] /ˈɪŋ kəs/
noun, plural incudes
[in-kyoo-deez] /ɪnˈkyu diz/ (Show IPA),
for 1; incus for 2.
Anatomy. the middle one of a chain of three small bones in the middle ear of humans and other mammals.
Compare malleus, stapes.
Also called anvil, anvil cloud, anvil top, thunderhead. the spreading, anvil-shaped, upper portion of a mature cumulonimbus cloud, smooth or slightly fibrous in appearance.
Origin of incus
1660-70; < New Latin, Latin incūs anvil, equivalent to incūd- (stem of incūdere to hammer, beat upon) + -s nominative singular ending; see incuse
Related forms
[ing-kyuh-deyt, -dit, in-] /ˈɪŋ kyəˌdeɪt, -dɪt, ˈɪn-/ (Show IPA),
[ing-kyuh-dl, in-] /ˈɪŋ kyə dl, ˈɪn-/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for incudal


noun (pl) incudes (ɪnˈkjuːdiːz)
the central of the three small bones in the middle ear of mammals Nontechnical name anvil Compare malleus, stapes
Derived Forms
incudate (ˈɪŋkjʊˌdeɪt), incudal (ˈɪŋkjʊdəl) adjective
Word Origin
C17: from Latin: anvil, from incūdere to forge
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 incudal



ear bone, 1660s, from Latin incus "anvil," from incudere "to forge with a hammer." So called by Belgian anatomist Andreas Vesalius (1514-1564).

Online Etymology Dictionary, © 2010 Douglas Harper
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incudal in Medicine

incudal in·cu·dal (ĭng'kyə-dl, ĭng-kyōōd'l)
Relating to the incus.

incus in·cus (ĭng'kəs)
n. pl. in·cu·des (ĭng-kyōō'dēz)
The middle of the three ossicles in the middle ear, located between the malleus and the stapes and composed of a body and two limbs. Also called anvil.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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incudal in Science
Plural incudes (ĭng-ky'dēz)
  1. The anvil-shaped bone (ossicle) that lies between the malleus and the stapes in the middle ear.

  2. The elongated, often anvil-shaped upper portion of a fully developed cumulonimbus cloud; a thunderhead.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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