Meaning of AMPLITUDE in English

ˈampləˌtüd, ˈaam-, -lə.ˌtyüd noun

( -s )

Etymology: Latin amplitudo, from amplus + -tudo -tude

1. : the quality or state of being ample : extent especially of surface or space : largeness of dimensions : size

2. : largeness of scope : breadth , abundance , fullness :

a. : extent of mental capacity or intellectual power

b. : extent especially of means, resources, dignity, or splendor

3. navigation

a. : the arc of the horizon between the true east or west point and the foot of the vertical circle passing through any star or object — compare azimuth

b. : the arc of the horizon between the magnetic east or west point and a heavenly body — called also magnetic amplitude

4. : the extent of a vibratory movement or of an oscillation : the maximum numerical value of a periodically varying quantity (as an alternating current, a radio wave, the air pressure in a sound-wave field, or the angular displacement of a pendulum) measured from its normal or equilibrium value taken as zero

5. : argument 6b

6. : the range of ecological adaptability of a kind or group of organisms (as of a species, genus, or family)

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.