amplitude
noun/ˈæmplɪtjuːd/
/ˈæmplɪtuːd/
[uncountable, countable] (physics)- the greatest distance that a wave, especially a sound or radio wave, vibrates (= moves up and down)Topics Physics and chemistryc2Word Originmid 16th cent. (in the senses ‘physical extent’ and ‘grandeur’): from Latin amplitudo, from amplus ‘large, abundant’.
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