Definition of amplitude Amplitude

/æˈmplʌtuˌd/ - [atmplutud] - am•pli•tude

We found 20 definitions of amplitude from 8 different sources.

What does amplitude mean?

Noun Plural: amplitudes
amplitude - greatness of magnitude
		magnitude the property of relative size or extent (whether large or small); "they tried to predict the magnitude of the explosion"; "about the magnitude of a small pea"
		signal level the amplitude level of the desired signal
amplitude - the property of copious abundance
		bountifulness, bounty
		copiousness, teemingness, abundance the property of a more than adequate quantity or supply; "an age of abundance"
amplitude - (physics) the maximum displacement of a periodic wave
		displacement, shift act of removing from office or employment

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amplitude (Noun)
The measure of something's size, especially in terms of width or breadth; largeness, magnitude.
amplitude (Noun)
The maximum absolute value of the vertical component of a curve or function, especially one that is periodic.
amplitude (Noun)
The maximum absolute value of some quantity that varies.

amplitude (n.)
State of being ample; extent of surface or space; largeness of dimensions; size.
amplitude (n.)
Largeness, in a figurative sense; breadth; abundance; fullness.
amplitude (n.)
Of extent of capacity or intellectual powers.
amplitude (n.)
Of extent of means or resources.
amplitude (n.)
The arc of the horizon between the true east or west point and the center of the sun, or a star, at its rising or setting. At the rising, the amplitude is eastern or ortive: at the setting, it is western, occiduous, or occasive. It is also northern or southern, when north or south of the equator.
amplitude (n.)
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.
amplitude (n.)
The horizontal line which measures the distance to which a projectile is thrown; the range.
amplitude (n.)
The extent of a movement measured from the starting point or position of equilibrium; -- applied especially to vibratory movements.
amplitude (n.)
An angle upon which the value of some function depends; -- a term used more especially in connection with elliptic functions.

amplitude
am′pli-tūd, n. largeness: abundance: width: splendour: wide range of mind: the distance from the east point of a horizon at which a heavenly body rises, or from the west point at which it sets. [Fr.—L. amplitudo.]

amplitude
As a general term, implies extent. In astronomy, it is an arc of the horizon intercepted between the true east or west points thereof, and the centre of the sun, star, or planet, at its rising or setting. In other words, it is the horizontal angular distance of a star from the east or west points. It is eastern or ortive when the heavenly object rises, and western or occiduous when it sets, and is moreover northern or southern according to its quarter of the horizon.--Amplitude, in gunnery, is the range or whole distance of a projectile, or the right horizontal line subtending the curvilineal path in which it moved.--Amplitude, in magnetism, is the difference between the rising and setting of the sun from the east and west points, as indicated by the mariner's or magnetic compass--which subtracted from the true amplitude, constitutes the error of the compass, which is the combined effect of variation and local deviation.

amplitude
In gunnery, is the range of shot, or the horizontal right line, which measures the distance which it has run.

The amplitude or peak amplitude of a wave is a measure of how big its oscillation is. Amplitudes are always positive numbers (for example: 3.5, 1, 120) and are never negative (for example: -3.5, -1, -120). Amplitudes are positive because distance can only be greater than zero or equal to zero; negative distance does not exist.

The distance from the top of one peak to the bottom of another is called "peak-to-peak amplitude". Another way to describe peak-to-peak amplitude is to say that it is the distance between the maximum positive value and the maximum negative value of a wave.