• (a.) Of, pertaining to, or designating, an acid of the aromatic series obtained from opianic acid. • (a.) Of, pertaining to, or designating, an acid of the aromatic series obtained from opianic acid.
No·ro`pi·an'ic adjective [ Etymology uncertain.] (Chemistry) Of, pertaining to, or designating, an acid of the aromatic series obtained from opianic acid.