Definition of amplitude noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈæmplɪtjuːd//
; NAmE NAmE//ˈæmplɪtuːd//
[uncountable, countable] (physics) Energy and physical forces, Radio technology
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the greatest distance that a wave, especially a sound or radio wave, vibrates (= moves up and down) Wordfinderamplitude, atom, energy, fission, force, frequency, gravity, molecule, nuclear, physics See related entries: Energy and physical forces, Radio technology Word Originmid 16th cent. (in the senses ‘physical extent’ and ‘grandeur’): from Latin amplitudo, from amplus ‘large, abundant’.
See the Oxford Advanced American Dictionary entry: amplitude

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