stapes

[stey-peez]
noun, plural stapes, stapedes [stuh-pee-deez] . Anatomy.
the innermost, stirrup-shaped bone of a chain of three small bones in the middle ear of humans and other mammals, involved in the conduction of sound vibrations to the inner ear. Also called stirrup. Compare incus ( def 1 ), malleus.

Origin:
1660–70; < Neo-Latin stapēs, Medieval Latin: stirrup, perhaps etymologizing alteration of Italian staffa stirrup (< Germanic) by association with Latin stāre to stand, and pēs, stem ped- foot

stapedial [stuh-pee-dee-uhl] , adjective
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World English Dictionary
stapes (ˈsteɪpiːz)
 
n , pl stapes, stapedes
incus Compare malleus Nontechnical name: stirrup bone the stirrup-shaped bone that is the innermost of three small bones in the middle ear of mammals
 
[C17: via New Latin from Medieval Latin, perhaps a variant of staffa, stapeda stirrup, influenced in form by Latin stāre to stand + pēs a foot]
 
stapedial
 
adj

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Etymonline
Word Origin & History

stapes
"stirrup bone in the middle ear," 1670, Mod.L. (1564), special use of M.L. stapes "stirrup," probably an alteration of L.L. stapia, related to stare "to stand" + pedem "foot." So called because the bone is shaped like a stirrup. This was an invented M.L. word for "stirrup," for which there was no classical
L. word, as the ancients did not use stirrups.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

stapes sta·pes (stā'pēz)
n. pl. stapes or sta·pe·des (stā'pĭ-dēz')
The smallest of the three auditory ossicles, whose base fits into the oval window and whose head is articulated with the lenticular process of the long limb of the incus. Also called stirrup.

The American Heritage® Stedman's Medical Dictionary
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American Heritage
Science Dictionary
stapes   (stā'pēz)  Pronunciation Key 
Plural stapes or stapedes (stā'pĭ-dēz')
The roughly stirrup-shaped bone that is the innermost of the three small bones (ossicles) of the middle ear.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
He said paleontologists had long suspected that dinosaurs had stapes.
The stapes and malleus are tiny bones that transmit hearing through the inner ear.
The earliest of those bones to have evolved was the stapes.
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