a bulbous, domelike roof ending in a sharp point, characteristically used in Russian Orthodox church architecture to cover cupolas or towers.
Capital vs. CapitolCapital and capitol are both commonly used in political contexts and are separated by just one letter, making them frustratingly easy to confuse. When it comes to these two terms, it’s important to note that one has a number of meanings while the other refers to a certain type of building. Capital has many definitions. It can mean “the wealth owned or employed in business …
Origin of onion dome
First recorded in 1955–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for onion dome
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