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voussoir

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noun vous·soir \vü-ˈswär, ˈvü-ˌ\

Definition of voussoir

  1. :  one of the wedge-shaped pieces forming an arch or vault — see arch illustration



Origin of voussoir

French, from Old French vosoir, from Vulgar Latin *volsorium, from Latin volvere to roll — more at voluble


First Known Use: 1728


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