contraoctave

[ kon-truh-ok-tiv, -teyv ]
/ ˌkɒn trəˈɒk tɪv, -teɪv /

noun Music.

the octave between the second and third C's below middle C.

Origin of contraoctave

First recorded in 1890–95; contra-2 + octave
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019