symphōnĭa, ae, f., = συμφωνία, an agreement of sounds, concord, harmony, symphony.
I Lit., sing.: cum symphonia caneret, Cic. Verr. 2, 3, 44, § 105; 2, 5, 13, § 31; id. Fam. 16, 9, 3; Liv. 39, 10, 7; Plin. 9, 8, 8, § 24; 10, 29, 43, § 84; Sen. Ep. 12, 8; Hor. A. P. 374.— Plur. , Cic. Cael. 15, 35; Cels. 3, 18 al.—Of a signal in war, Prud. ad Symm. 2, 527.—
II Transf., in late Lat., a kind of musical instrument , Isid. Orig. 3, 22 fin. ; cf. Hier. Ep. 21, 29.