amplitude

noun

am·pli·tude | \ -ˌtüd

, -ˌtyüd\

Definition of amplitude

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

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

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

2 : extent of dignity, excellence, or splendor

3 : 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

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

— called also argument

— compare absolute value sense 2

5 : the height achieved on a jump by a snowboarder, skateboarder, skier, etc. " … a lot of my strength in snowboarding is my amplitude … "— Shaun White

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Examples of amplitude in a Sentence

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

Recent Examples on the Web

If the axions hit the swing with the right time delay, then the swing will start to swing at its natural frequency, and the amplitude will grow. — Chris Lee, Ars Technica, "Pulsars could convert dark matter into something we could see," 20 Dec. 2018 But skin is quite sensitive to shifts in intensity and amplitude, and that's what the M:NI system exploits. — Jennifer Ouellette, Ars Technica, "New wearable tech lets users listen to live music through their skin," 25 Nov. 2018 And amplitudes can be positive or negative, so the sum is not necessarily bigger. — Chris Lee, Ars Technica, "New form of qubit control may yield longer computation times," 25 Jan. 2018 Light is considered polarized if the amplitude varies in a consistent manner perpendicular to the direction the wave is traveling. — Ann Elsner, Smithsonian, "Polaroid Inventor Edwin Land Gave Us More Than Just Instant Photos," 18 May 2018 Preamp Tubes: Increase the amplitude of the audio signal from the guitar and send it to circuits that introduce effects like reverb and tremolo. 7. — Kevin Dupzyk, Popular Mechanics, "What a Fender Amp Looks Like When You Tear It Apart," 24 Mar. 2015 Having an understanding of the tidal timing and amplitude is a first step in creating a kinship with the river. — Joseph A. Gambardello, Philly.com, "Those floating balls under Schuylkill Banks boardwalk explained," 12 June 2018 Most light sources produce a mixture of waves with all different physical properties, such as wavelength and amplitude of vibration. — Ann Elsner, Smithsonian, "Polaroid Inventor Edwin Land Gave Us More Than Just Instant Photos," 18 May 2018 Wolff measured the amplitude of pulsations of blood vessels in the scalp during migraine attacks and after the administration of a drug that constricted the vessels. — R. Allan Purdy, Scientific American, "Can Anything Stop My Migraine?," 1 May 2017

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.