arcosolium

[ ahr-kuh-soh-lee-uhm ]

/ ˌɑr kəˈsoʊ li əm /

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noun, plural ar·co·so·li·a

[ahr-kuh-soh-lee-uh]. /ˌɑr kəˈsoʊ li ə/.

(in Roman catacombs) an arched recess for a sarcophagus.

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Origin of arcosolium

1875–80; <New Latin, equivalent to Latin arc(us) arc + -o--o- + solium sarcophagus

A peculiar form of grave common in these chambers, as well as in the galleries, is that known as the arcosolium, or arched tomb.
The Catacombs of Rome|William Henry Withrow
The arcosolium to which this is attached contains the remarkable paintings represented in the accompanying engraving.
The Catacombs of Rome|William Henry Withrow
However, all tombs of this period fall into two groups, kk tombs and arcosolium tombs.
How to Observe in Archaeology|Various
In arcosolium tombs the receptacles are benches cut in the wall, like the berths in a steamer's cabin.
How to Observe in Archaeology|Various

Other forms of very frequent recurrence are the table tomb and arched tomb, or arcosolium.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5|Various