Relating to harmony or having the nature of harmony; marked by agreement and accord.
From Harmonia (Greek goddess/concept) + -al (adjective suffix). This learned formation connects the mythological and philosophical concept to adjectival form, primarily used in classical and literary contexts.
This is an extremely rare word—you'll almost never encounter it in modern English because we simplified it to 'harmonic' and 'harmonious,' but older texts used it to emphasize the goddess or mythological connection to the idea of perfect harmony.
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