Voussoir meaning

vo͝o-swär
One of the wedge-shaped stones forming the curved parts of an arch or vaulted ceiling.
noun
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(architecture) One of a series of wedge-shaped bricks forming an arch or vault.
noun
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(archit.) Any of the wedge-shaped stones, or other parts, of which an arch is built: the central, topmost voussoir is called the keystone; either of the lowest voussoirs is called the springer.
noun
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Origin of voussoir

  • French from Old French vossoir from Vulgar Latin volsōrium from volsus past participle of Latin volvere to turn, roll wel-2 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition