单词	fenestra
释义	fenestra noun fe·​nes·​tra fə-ˈne-strə  plural fenestrae fə-ˈne-ˌstrē  -ˌtrī 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 fenestral fə-ˈne-strəl  adjective Example Sentences Recent Examples on the Web In most meat-eating dinosaurs, a ridge of bone provides a roof over an opening in the skull in front of the eye sockets known as the antorbital fenestra. Matthew A. Brown, Scientific American, 1 Jan. 2021 Pterosaurs also had extra openings in their skulls, the largest of which was an opening in front of the eyes known as an antorbital fenestra. Michael B. Habib, Scientific American, 1 Oct. 2019 The massive dinosaur had two large holes in the roof of its skull (dorsotemporal fenestra) that were filled with muscles to aid jaw movements. Fox News, 6 Sep. 2019 The specialized pocket sits within an opening on the top rear of the skull called the dorsotemporal fenestra. Riley Black, Smithsonian, 4 Sep. 2019 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, 6 June 2012 Word History Etymology New Latin, from Latin, window First Known Use circa 1737, in the meaning defined at sense 1 Phrases Containing fenestra fenestra vestibuli fenestra cochleae fenestra rotunda fenestra ovalis fenestra vestibuli fenestra cochleae fenestra rotunda fenestra ovalis Medical Definition fenestra noun fe·​nes·​tra fə-ˈnes-trə  plural fenestrae -ˌtrē  -ˌtrī  1 : a small anatomical opening (as in a bone): as a : oval window b : round window 2 a : a small opening cut in bone : window sense 2 b : a small opening in a surgical instrument (as an endoscope)
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