in music, "melodious, in a melodious way," 1742, from Italian arioso "like an aria," from aria "melody" (see aria). Distinguished from recitative.
Entries linking to arioso
aria n.
"melody for a single voice," 1775, from Italian aria, literally "air" (see air (n.1)).
Historically considered, the aria marks a single moment in the course of a dramatic action. The text often consists of but a few words, many times repeated (as we find in Handel's oratorios, etc.), and the musical development is the main thing. The opposite of aria is recitative(q.v.), in which the declamation of the syllables is the main thing, colored, perhaps, by means of clever orchestration. [W.S.B. Mathews and Emil Liebling, "Dictionary of Music," 1896]
recitative n.
"style of musical declamation intermediate between speech and singing, form of song resembling declamation," 1650s, from Italian recitativo, from recitato, past participle of recitare, from Latin recitare "read out, read aloud" (see recite). From 1640s as an adjective. The Italian form of the word was used in English from 1610s.