An alternative adjectival form of catacombic; relating to or characteristic of catacombs or underground burial chambers.
From 'catacumba' + '-al', providing an adjective form based on the Latin-origin noun spelling rather than the English 'catacomb' version.
This shows how English adapts different Latin roots—'catacumbal' sounds more scholarly and Latin-based than 'catacombic', so it appears in academic archaeological papers while 'catacombic' suits general writing.
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