adjective/abiˈsal/
abyssal (belonging to the ocean depths)
Synonyms: abismal
Etymology tree Ancient Greek ἀ- (a-) Proto-Indo-European *dʰewb-der. Ancient Greek βυθός (buthós) Ancient Greek ἄβῠσσος (ábŭssos)bor. Latin abyssus Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālis Medieval Latin abyssālisbor. Spanish abisal Borrowed from Medieval Latin abyssālis.