ADVERBIAL

adverbial

(adjective) of or relating to or functioning as an adverb; “adverbial syntax”

adverbial

(noun) a word or group of words function as an adverb

Source: WordNet® 3.1

Etymology

Adjective

adverbial (comparative more adverbial, superlative most adverbial)

(grammar) Of or relating to an adverb.

Noun

adverbial (plural adverbials)

(grammar) An adverbial word or phrase.

Source: Wiktionary

Ad*ver"bi*al, a. Etym: [L. adverbialis: cf. F. adverbial.]

Definition: Of or pertaining to an adverb; of the nature of an adverb; as, an adverbial phrase or form.

Source: Webster’s Unabridged Dictionary 1913 Edition