stapes

noun
sta·​pes | \ˈstā-(ˌ)pēz \
plural stapes or stapedes\ ˈstā-​pə-​ˌdēz \

Definition of stapes 

: the innermost ossicle of the middle ear of mammals

called also stirrup

— see ear illustration

First Known Use of stapes

1615, in the meaning defined above

History and Etymology for stapes

New Latin staped-, stapes, from Medieval Latin, stirrup, alteration of Late Latin stapia

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The first known use of stapes was in 1615

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stapes

noun
sta·​pes | \ˈstā-(ˌ)pēz \
plural stapes or stapedes\ stə-​ˈpē-​ˌdēz \

Medical Definition of stapes 

: the innermost of the chain of three ossicles in the middle ear of a mammal having the form of a stirrup, a base occupying the oval window, and a head connected with the incus

called also stirrup

More from Merriam-Webster on stapes

Britannica.com: Encyclopedia article about stapes

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