decachord

1. (historical, music) An Ancient Greek musical instrument with ten strings, resembling the harp.Examples: "Apollo himself is depicted with a decachord, that is, an instrument with ten tuned strings, or ten harmonising voices, otherwise a cithara."historical

2. (music) A set of ten pitches used to create a musical mode.Examples: "Using the logic employed by many subset-based similarity measures, the chromatic trichord apparently has twice the affinity to this decachord as it does to the chromatic pentachord, despite the fact that the trichord could be seen as the progenitor of the pentachord but not of the decachord."; "The reduced span of the system either indicates that the system was devised for the octochord or the decachord, or for the octochord with different tunings, in respect of UET VII 74."; "Two pentachords can be combined to create the decachord discussed by Carpenter."