Lewis Short
(adjective) : mūsīvus, a, um, musa
* Of or belonging to a muse, artistic: fontem opere musivo exornare,Inscr. Orell. 3323; cf. Museus.—As subst.: mūsīvum, i, n., = μουσεῖον, mosaic work, mosaic (post-class.): pictum de musivo,Spart. Pesc. 6: musivo picta genera hominum, Aug. Civ. Dei, 16, 8.
Charlton T. Lewis, Charles Short, A Latin Dictionary