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conical vault

noun
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Definition of conical vault

architecture
: a vault of which the curved elements, usually arcs of circles, are larger at one extremity than at the other and whose soffit is therefore conical in form

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“Conical vault.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/conical%20vault. Accessed 13 Jun. 2021.

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