( n. )
The interval between any tone and the tone represented on the tenth degree of the staff above it, as between one of the scale and three of the octave above; the octave of the third.
( n. )
The interval between any tone and the tone represented on the tenth degree of the staff above it, as between one of the scale and three of the octave above; the octave of the third.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012