Meaning of “amplitude” in the English Dictionary

"amplitude" in American English

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amplitudenoun [ C/U ]

us /ˈæm·plɪˌtud/

physics the strength of a wave of sound or electricity, measured at the strongest repeating part of the wave

trigonometry Amplitude is also the greatest height of a graph (= drawing) of the relationships of a sine or cosine.

earth science Amplitude is also the height of a wave (= water movement) from top to bottom.

(Definition of “amplitude” from the Cambridge Academic Content Dictionary © Cambridge University Press)