[ 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.
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
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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. 2022

How to use fenestra in a sentence

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

Derived forms of fenestra

fenestral, adjective

Word Origin for fenestra

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.

Other words from fenestra

fe•nestral adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.