ALTalso: エーエルティーFreq.FrequencyTop 50,000Meanings1nounassistant language teacher; ALTRefers to a foreign national who assists in language classes, especially English, in Japanese schools. The term is widely used in educational contexts.See also: 外国語指導助手今年ことしのALTはアメリカから来きました。This year's ALT came from the United States.ALTと一いっ緒しょに英えい語ごの授じゅ2nounalanine aminotransferase; ALTmedicine›Medical abbreviation for the liver enzyme alanine aminotransferase. Used in clinical contexts.See also: GPT血けつ液えき検けん査さでALTの値あたいが高たかかっ