fenestra

noun
fe·nes·tra | \fə-ˈne-strə \
plural fenestrae\fə-ˈne-ˌstrē, -ˌtrī \

Definition of fenestra 

1 : a small anatomical opening (as in a bone): such as

a or fenestra ovalis \-ō-ˈvā-ləs \ or fenestra vestibuli \-ve-ˈsti-byə-ˌlī \ : oval window

b or fenestra cochleae \-ˈkä-klē-ˌē, -ˈkō-klē-ˌī \ or fenestra rotunda \-rō-ˈtən-də \ : round window

2 : an opening cut in bone

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Other Words from fenestra

fenestral \fə-ˈne-strəl \ adjective

Examples of fenestra in a Sentence

Recent Examples on the Web

All these animals are united by subtle skull features, such as the absence of a hole in the lower jaw called the mandibular fenestra and the flat, wrinkle-cusped teeth set along the jaws. Brian Switek, WIRED, "The Jurassic’s Housecat Croc," 6 June 2012

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fenestra.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of fenestra

circa 1737, in the meaning defined at sense 1

History and Etymology for fenestra

New Latin, from Latin, window

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Time Traveler for fenestra

The first known use of fenestra was circa 1737

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More Definitions for fenestra

fenestra

noun
fe·nes·tra | \fə-ˈnes-trə \
plural fenestrae\-ˌtrē, -ˌtrī \

Medical Definition of fenestra 

1 : a small anatomical opening (as in a bone): as

a : oval window

b : round window

2a : a small opening cut in bone : window sense 2

b : a small opening in a surgical instrument (as an endoscope)

Other Words from fenestra

fenestral \-trəl \ adjective

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