[ fi-nes-truh ]
/ fɪˈnɛs trə /
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noun, plural fe·nes·trae [fi-nes-tree]. /fɪˈnɛs tri/.

Anatomy, Zoology. a small opening or perforation, as in a bone, especially between the middle and inner ear.
Entomology. a transparent spot in an otherwise opaque surface, as in the wings of certain butterflies and moths.
Architecture. a windowlike opening.



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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of fenestra

1820–30; <New Latin, special use of Latin fenestra window, hole (in a wall)
fe·nes·tral, adjectiveun·fe·nes·tral, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for fenestra

/ (fɪˈnɛstrə) /

noun plural -trae (-triː)

biology a small opening in or between bones, esp one of the openings between the middle and inner ears
zoology a transparent marking or spot, as on the wings of moths
architect a window or window-like opening in the outside wall of a building
fenestral, adjective
C19: via New Latin from Latin: wall opening, window
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

Medical definitions for fenestra

[ fə-nĕstrə ]

n. pl. fe•nes•trae (-trē′)

A small anatomical opening, often closed by a membrane.
The opening in a bone made by surgical fenestration.
A specialized opening, as in a surgical instrument.
fe•nestral adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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