Definitions for "Countertenor"
A high male voice, sometimes using falsetto, generally singing within the female contralto or mezzo-soprano range. Also known as a “male alto”, with some very high countertenors today describing themselves as “male sopranos”. The countertenor frequently portrayed young, virile men or innocent adolescents—the voices were generally quite powerful, and not considered effeminate.
A high male voice that generally sings within the female contralto or mezzo soprano range.
A countertenor voice is that of a male contralto. Some roles that are usually sung by a female contralto can be sung by a male countertenor.