heptachord

The story

1. Ancient Greek · derived fromἑπτάχορδος“seven-stringed”
2. English todayheptachord

From Ancient Greek ἑπτάχορδος (heptákhordos, “seven-stringed”), from ἑπτά (heptá, “seven”) + χορδή (khordḗ, “chord”). Compare French heptacorde.