Heptachord is a musical term that refers to a seven-note scale or a musical instrument with seven strings. Although there may not be an abundance of direct synonyms for this particular term, there are certainly many music-related words that are related to heptachord. For instance, terms that relate to seven could work such as septet, septuor, or simply seven-stringed instrument. Additionally, the term heptatonic could describe music that is made with a seven-note scale. Other musical words that could be associated with heptachord include melody, harmony, composition, frequency, resonance, and musicianship. By understanding the meaning and context of heptachord, one can more easily find appropriate synonyms.