say it: AL-toh
alto is a noun and adjective meaning "a singer whose voice lies in the alto clef". It carries 8 recorded senses.
a singer whose voice lies in the alto clef
the lowest female singing voice
the highest adult male singing voice
(of a musical instrument) the second highest instrument in a family of musical instruments
the pitch range of the lowest female voice
of or being the highest male voice; having a range above that of tenor
(of a musical instrument) second highest member of a group
“alto clarinet or recorder”
music
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for alto come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.