出典:Wiktionary
From Latin marmoreus (“of, pertaining to, consisting of または made of marble; resembling marble; adorned with statues”) + English -al (suffix forming adjectives).[1] Marmoreus is derived from marmor (“block または piece of marble; marble building または statue”) (from Ancient Greek μάρμᾰρος (mármaros, “marble”)) + -eus (suffix forming adjectives from nouns).
marmoreal (comparative more marmoreal, superlative most marmoreal) (literary)