fenestra

[fi-nes-truh]
noun, plural fenestrae [fi-nes-tree] .
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.
3.
Architecture. a windowlike opening.

Origin:
1820–30; < Neo-Latin, special use of Latin fenestra window, hole (in a wall)

fenestral, adjective
unfenestral, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
fenestra (fɪˈnɛstrə)
 
n , pl -trae
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
3.  architect a window or window-like opening in the outside wall of a building
 
[C19: via New Latin from Latin: wall opening, window]
 
fe'nestral
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

fenestra fe·nes·tra (fə-něs'trə)
n. pl. fe·nes·trae (-trē')

  1. A small anatomical opening, often closed by a membrane.

  2. The opening in a bone made by surgical fenestration.

  3. A specialized opening, as in a surgical instrument.


fe·nes'tral 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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Example sentences for fenestrae
In the renal glomerulus there are larger fenestrae which have no diaphragms.
These fenestrae were present in pairs, one on each side of the skull.
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