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English definition of “amplitude”

amplitude

noun [C/U]  /ˈæm·plɪˌtud/ us  
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)
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