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.
- fe·nes·tral, adjective
- un·fe·nes·tral, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use fenestra in a sentence
The pro-otic lies in front of the exoccipital and together with the opisthotic forms the hind border of the fenestra ovalis.
During life the fenestra ovalis lodges the proximal end of the columellar chain.
There are in mammals four auditory ossicles forming a chain extending from the fenestra ovalis to the tympanic membrane.
This operation, however, necessitates the complete mastoid operation in order to freely expose the region of the fenestra ovalis.
Some authorities advise chiselling away of the margins of the fenestra ovalis.
British Dictionary definitions for fenestra
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
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