χρωματικόν
From LSJ
Κύριε, βοήθησον τὸν δοῦλον σου Νῖλον κτλ. → Lord, help your slave Nilos ... (mosaic inscription from 4th-cent. church in the Negev)
Russian (Dvoretsky)
χρωμᾰτικόν: τό муз. хроматический лад, хроматизм (τὸ διάτονον καὶ τὸ χ. καὶ τὸ ἐναρμόνιον Plut.).