1 quarter tone | Definition of quarter tone

quarter tone

noun

Definition of quarter tone

1 : a musical interval of one half a semitone
2 : a tone at an interval of one quarter

First Known Use of quarter tone

1673, in the meaning defined at sense 1

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More from Merriam-Webster on quarter tone

Rhyming Dictionary: Words that rhyme with quarter tone

Britannica.com: Encyclopedia article about quarter tone