• WordNet 3.6
    • n voussoir wedge-shaped stone building block used in constructing an arch or vault
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Webster's Revised Unabridged Dictionary
    • n Voussoir (Arch) One of the wedgelike stones of which an arch is composed.
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Century Dictionary and Cyclopedia
    • n voussoir In architecture, a stone in the shape of a truncated wedge, which forms part of an arch. The under sides of the voussoirs form the intrados or soffit of the arch, and the upper sides the extrados. The middle voussoir is often termed the keystone. See arch, 2.
    • voussoir To form with voussoirs; construct by means of voussoirs.
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Chambers's Twentieth Century Dictionary
    • n Voussoir vōō-swär′ one of the wedge-like stones which form part of an arch
    • v.t Voussoir to form with such
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Webster's Revised Unabridged Dictionary
F., akin to voûte, an arch, a vault


In literature:

For sewer work and arches, bricks shaped as voussoirs are supplied.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3" by Various
Tomlinson, can you tell me what the extrados of a voussoir is?
"The Strange Case of Mortimer Fenley" by Louis Tracy
The arches are simply chamfered but are each crossed by three carved voussoirs.
"Portuguese Architecture" by Walter Crum Watson
All the arches are round, and the little arcade has red and grey voussoirs.
"The Shores of the Adriatic" by F. Hamilton Jackson
Not so; you would only waste your good voussoirs.
"The Stones of Venice, Volume I (of 3)" by John Ruskin
In the building of an arch, the voussoirs have to be temporarily supported, until the keystone is inserted.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 4" by Various