Meaning of AMPLITUDE in English

AMPLITUDE

/ ˈæmplɪtjuːd; NAmE -tuːd/ noun

[ U , C ] ( physics ) the greatest distance that a wave, especially a sound or radio wave, vibrates (= moves up and down)

••

WORD ORIGIN

mid 16th cent. (in the senses physical extent and grandeur ): from Latin amplitudo , from amplus large, abundant.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.