ˌfenəˈstrāshən noun
( -s )
Etymology: Latin fenestrat us + English -ion
1.
a. : the arrangement, proportioning, and design of windows and doors in a building
b.
(1) : openings admitting daylight to a building
classroom fenestration consists of glass block panels over continuous windows
(2) : the furnishing of a building with fenestration
fenestration with louvered wall and continuous windows to control the amount and distribution of daylight
2.
a. : an opening or break in a surface (as in a wall or membrane)
the level of brightness at the fenestrations
b. : the presence of such openings
3. or fenestration operation : the operation of cutting an opening in the bony labyrinth between the inner ear and tympanum to replace natural fenestrae that are not functional because of sclerotic or other changes and to improve hearing impaired by such fenestrae