Middle c middle c • middle cerebral artery · · · Info · Definitions · Characters · · Middle c · · Text Common · · Latin · · Scripts 8 · · Length 3 · · Syllables Definitions · · · (noun) the note designated by the first ledger line below the treble staff; 261.63 hertz. Synonyms: middle C. · · Noun Definition 1 Characters · · space U+0020 M latin capital letter m U+004D c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C