middle C

noun Music.

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

Origin of middle C

First recorded in 1830–40

British Dictionary definitions for middle c

middle C

noun

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