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: the extent or range of a quality, property, process, or phenomenon: such as

: the extent of a vibratory movement (as of a pendulum) measured from the mean position to an extreme

: the maximum departure of the value of an alternating current or wave from the average value

: extent of dignity, excellence, or splendor

: the quality or state of being ample : fullness , abundance

... the long unerring lines, the sweep and amplitude of the great artist's stroke ... - Edith Wharton

mathematics : the angle assigned to a complex number when it is plotted in a complex plane using polar coordinates

: the height achieved on a jump by a snowboarder, skateboarder, skier, etc.

" ... a lot of my strength in snowboarding is my amplitude ... " - Shaun White

Synonyms

Example Sentences

the amplitude of Thomas Jefferson's interests-government, architecture, agriculture, science, philosophy-is truly awesome

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'amplitude.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

borrowed from Middle French & Latin; Middle French, borrowed from Latin amplitūdin-, amplitūdō "size, extent, eminence, prestige," from amplus "more than adequate in size or extent, ample, eminent" + -i- -i- + -tūdin-, -tūdō -tude

1542, in the meaning defined at sense 1

The first known use of amplitude was in 1542

Dictionary Entries Near amplitude

Cite this Entry

"Amplitude." Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/amplitude. Accessed 21 Mar. 2023.

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the extent or range of a quality, property, process, or phenomenon: such as; the extent of a vibratory movement (as of a pendulum) measured from the mean position to an extreme; the maximum departure of the value of an alternating current or wave from the average value...

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Wavelength: The distance from one peak to another on a wave.

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Wavelength: The distance from one peak to another on a wave.

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What is WAVELENGTH? What does WAVELENGTH mean? WAVELENGTH meaning, definition & explanation

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What is WAVELENGTH? What does WAVELENGTH mean? WAVELENGTH meaning - WAVELENGTH pronunciation - WAVELENGTH definition - WAVELENGTH explanation - How to pronounce WAVELENGTH? Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. In physics, the wavelength of a sinusoidal wave is the spatial period of the wave-the distance over which the wave's shape repeats, and the inverse of the spatial frequency.

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Frequency: The number of peaks that pass in a second.

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Frequency: The number of peaks that pass in a second.

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the fact or condition of occurring frequently; the number of times that a periodic function repeats the same sequence of values during a unit variation of the independent variable; the number, proportion, or percentage of items in a particular category in a set of data… See the full definition