middle C

American  

noun

Music.

1. the note indicated by the first leger line above the bass staff and the first below the treble staff.

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middle C British  

noun

1. music the note graphically represented on the first ledger line below the treble staff or the first ledger line above the bass staff and corresponding in pitch to an internationally standardized fundamental frequency of 261.63 hertz

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Etymology

Origin of middle C

First recorded in 1830–40

Example Sentences

See Examples For:

middle C

For what it’s worth, though, they did find that the waves corresponded to the note of B-flat, about 57 octaves below the middle C note on a piano.

From Salon ● Jun. 3, 2025

In one passage shortly after Emile’s first entrance, Blanchard originally called for high G’s, which now have been lowered to B’s, one step below middle C.

From Seattle Times ● Apr. 6, 2023

It was delightful, except for a badly out-of-tune middle C.

From New York Times ● Dec. 16, 2018

The concert began with violas standing in the back and intoning middle C as Avital and Azmeh gingerly began a joint improvisation.

From Los Angeles Times ● Nov. 9, 2017

They might call a note "middle C" or "second line G" or "the F sharp in the bass clef."

From "Understanding Basic Music Theory" by Catherine Schmidt-Jones and Russel Jones