Adjective alto has 3 senses
- alto, contralto - of or being the lowest female voice
Antonyms: high, high-pitched (indirect, via low)
- countertenor, alto - of or being the highest male voice; having a range above that of tenor
Antonyms: low, low-pitched (indirect, via high)
- alto - (of a musical instrument) second highest member of a group; "alto clarinet or recorder"
Antonyms: low, low-pitched (indirect, via high)
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Noun alto has 4 senses
- alto - a singer whose voice lies in the alto clef
--1 is a kind of singer, vocalist, vocalizer, vocaliser
--1 has particulars: countertenor
- contralto, alto - the lowest female singing voice
--2 is a kind of singing voice
- countertenor, alto - the highest adult male singing voice
--3 is a kind of singing voice
- alto - the pitch range of the lowest female voice
--4 is a kind of low pitch, low frequency
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