[ing-kuh s]
noun, plural in·cu·des [in-kyoo-deez] /ɪnˈkyu diz/ for 1; in·cus for 2.
  1. Anatomy. the middle one of a chain of three small bones in the middle ear of humans and other mammals.Compare malleus, stapes.
  2. 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 formsin·cu·date [ing-kyuh-deyt, -dit, in-] /ˈɪŋ kyəˌdeɪt, -dɪt, ˈɪn-/, in·cu·dal [ing-kyuh-dl, in-] /ˈɪŋ kyə dl, ˈɪn-/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for incudal


noun plural incudes (ɪnˈkjuːdiːz)
  1. the central of the three small bones in the middle ear of mammalsNontechnical name: anvil Compare malleus, stapes
Derived Formsincudate (ˈɪŋkjʊˌdeɪt) or incudal (ˈɪŋkjʊdəl), adjective

Word Origin for incus

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

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

incudal in Medicine


[ĭngkyə-dl, ĭng-kyōōdl]
  1. Relating to the incus.


n. pl. in•cu•des (ĭng-kyōōdēz)
  1. 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.anvil
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

incudal in Science


Plural incudes (ĭng-kyōōdēz)
  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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.