The definition of a mausoleum is a very large tomb or room for burial.(noun)
An example of a Mausoleum is a vault where an entire family is buried.
See Mausoleum in Webster's New World College Dictionary
noun pl. mausoleums
Origin: L < Gr Mausōleion
See Mausoleum in American Heritage Dictionary 4
noun pl. mau·so·le·ums or mau·so·le·a (-lēˈə)
Origin: Middle English
Origin: , from Latin Mausōlēum
Origin: , from Greek Mausōleion
Origin: , from Mausōlos, Mausolus (died c. 353 B.C.), Persian satrap of Caria whose tomb was considered one of the Seven Wonders of the World.
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