[ fi-nes-truh ]
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noun,plural fe·nes·trae [fi-nes-tree]. /fɪˈnɛs tri/.
  1. Anatomy, Zoology. a small opening or perforation, as in a bone, especially between the middle and inner ear.

  2. Entomology. a transparent spot in an otherwise opaque surface, as in the wings of certain butterflies and moths.

  1. Architecture. a windowlike opening.

Origin of fenestra

1820–30; <New Latin, special use of Latin fenestra window, hole (in a wall)

Other words from fenestra

  • fe·nes·tral, adjective
  • un·fe·nes·tral, adjective

Words Nearby fenestra

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use fenestra in a sentence

British Dictionary definitions for fenestra


/ (fɪˈnɛstrə) /

nounplural -trae (-triː)
  1. biology a small opening in or between bones, esp one of the openings between the middle and inner ears

  2. zoology a transparent marking or spot, as on the wings of moths

  1. architect a window or window-like opening in the outside wall of a building

Origin of fenestra

C19: via New Latin from Latin: wall opening, window

Derived forms of fenestra

  • fenestral, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012