- the lowest female voice; contralto.
- the highest male voice; countertenor.
- a singer with such a voice.
- a musical part for such a voice.
- the second highest of the four parts of a mixed vocal chorus, or the voices or persons singing this part.
- the second highest instrument in a family of musical instruments, as the viola in the violin family or the althorn in the cornet family.
- of, relating to, or having the tonal range of the alto.
- (of a musical instrument) second highest in a family of musical instruments: alto saxophone.
- variant of alti-: altostratus.
- the highest adult male voice; countertenor
- (in choral singing) a shortened form of contralto
- a singer with such a voice
- another name for viola 1 (def. 1)
- a flute, saxophone, etc, that is the third or fourth highest instrument in its group
- denoting a flute, saxophone, etc, that is the third or fourth highest instrument in its group
- high
