adverbiālis, e, adj. [adverbium], pertaining to an adverb, adverbial: super et subter adverbiales sunt, i. e. are sometimes used as adverbs, Charis. II. p. 182 P.: nomina, derived from adverbs, Prisc. IV. p. 619 P.: adjectivum, derived from an adverb, as externus from extra, id. II. p. 579.