hex.a.chord

n.Music （名詞）【音樂】
A sequence of six tones with a semitone in the middle, the others being whole tones, that was used in medieval music.
六音音列：有六個(gè)音的音列，其中中間為一半音，其余的均為全音，此音列曾用于中世紀(jì)音樂中

來源：
Medieval Latin hexachordum
中世紀(jì)拉丁語 hexachordum
from Latin hexachordos [having six strings or stops]
源自 拉丁語 hexachordos [具有六弦或六音栓]
Greek hexa- [hexa-]
希臘語 hexa- [六]
Greek -khordos [string, note] from khordô * see cord
希臘語 -khordos [弦音] 源自 khordô *參見 cord