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Use "columbaria" in a sentence
"The remains of the dead are sent to be cremated and placed in multistory depositories, called columbaria, that look very much like the government apartment blocks where many of them had lived before their interludes underground."
"The grounds are primarily for the use of the proprietors, columbaria niche owners, mausoleum crypt owners and the families and friends of the deceased."
"A not-so-little forest of columbaria bobbing about in the future ice-free waters of an auroral Arctic."