fenestra

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noun

An opening in a body, sometimes with a membrane.

Similar
vestibular windowoval window
OriginLatin fenestra ← Etruscan *𐌚𐌍𐌄𐌔𐌕𐌓𐌀 (*fnestra)bor.? →
RareScrabble 11
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Meanings

nounfenestra (plural fenestras or fenestrae or (obsolete) fenestræ)

plural fenestras · plural fenestrae · obsolete plural fenestræ

  1. anatomyAn opening in a body, sometimes with a membrane.

    The platinum shaft connecting the ribbon to the piston base is a rounded wire and can be easily angulated after placement of the prosthesis for optimal incus to fenestra reach.

    2010, Aina J. Gulya, Lloyd B. Minor, Michael E. Glasscock, Glasscock-Shambaugh Surgery of the Ear, page 536

    Synonyms: vestibular window, oval window

Synonyms & antonyms

nounAn opening in a body, sometimes with a membrane.

Similar
vestibular windowoval window

Origin

  1. Etruscan*𐌚𐌍𐌄𐌔𐌕𐌓𐌀 (*fnestra)bor.?
  2. Latinfenestra
  3. Englishfenestra

Unadapted borrowing from Latin fenestra. Existed in Middle English as fenestre, fenester, from Old English fenester (“window”).

More words from Latin

Full word history & related roots →

Rhymes & wordplay

Anagrams

fastenerFeenstrarefasten
Cite this entry
APA

fenestra. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/fenestra

MLA

“fenestra.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fenestra. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “fenestra,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/fenestra.

Source: fenestra on Wiktionary, CC BY-SA 4.0.