fenestration

noun

fen·​es·​tra·​tion ˌfe-nə-ˈstrā-shən How to pronounce fenestration (audio)
1
: the arrangement, proportioning, and design of windows and doors in a building
2
: an opening in a surface (such as a wall or membrane)
3
: the operation of cutting an opening in the bony labyrinth between the inner ear and tympanum to replace natural fenestrae that are not functional

Examples of fenestration in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The Swiss cheese descriptor is derived from the fenestrations or window-like perforations in its foliage. Joshua Siskin, Oc Register, 27 May 2026 In time, the building would become an icon of post-modernism, beloved for its witty fenestration, voids, and ground-level arcades, the latter of which were recently enclosed in glass curtain walls, thanks to a building-wide revitalization by the global architecture firm Snøhetta. Margaret Borden, Architectural Digest, 4 May 2026 These large-leafed houseplants, known for their striking fenestrations and tropical appearance, have been popular since the mid-20th century, particularly in mid-century modern interiors. Cori Sears, The Spruce, 24 Feb. 2026 High humidity, bright indirect light, and warm temperatures are essential for healthy growth and proper leaf fenestration. Sj McShane, Martha Stewart, 18 Jan. 2026 Similar to the much-smaller Monstera adansonii, the 'Esqueleto' variety has super-sized leaves with huge fenestrations (or holes) in the leaves. Andrea Beck, Better Homes & Gardens, 4 Oct. 2025 The Thomas house sits close to the street and, with minimal fenestration besides a huge bank of Mondrian-style frosted windows alongside the front door, is oriented to take advantage of its high mountainside perch. Mark David, Robb Report, 9 Sep. 2025 The revolving doors and complex fenestration made entering the museum crowded and confusing. Dodie Kazanjian, Vogue, 5 Aug. 2024

Word History

First Known Use

1846, in the meaning defined at sense 1

Time Traveler
The first known use of fenestration was in 1846

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Cite this Entry

“Fenestration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fenestration. Accessed 4 Jun. 2026.

Medical Definition

fenestration

noun
fen·​es·​tra·​tion ˌfen-ə-ˈstrā-shən How to pronounce fenestration (audio)
1
a
: a natural or surgically created opening in a surface
b
: the presence of such openings
2
: a surgical procedure that involves cutting an opening in the bony labyrinth between the inner ear and tympanum to replace natural fenestrae that are not functional (as in otosclerosis)
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