CONTRAOCTAVE
Meaning of CONTRAOCTAVE in English
/kon'treuh ok"tiv, -tayv/ , n. Music.
the octave between the second and third C's below middle C.
[ 1890-95; CONTRA- 2 + OCTAVE ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012