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onion dome

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noun Architecture.
a bulbous, domelike roof ending in a sharp point, characteristically used in Russian Orthodox church architecture to cover cupolas or towers.
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Origin of onion dome

First recorded in 1955–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for onion dome

onion dome

noun
a bulb-shaped dome characteristic of Byzantine and Russian church architecture
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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