# What Is the Definition of Amplitudes?

Amplitude refers to something's greatness in size, also referred to as magnitude. Breadth or range, as of intelligence, is also termed as amplitude. In physics, the term amplitude is used to mean the maximum displacement of a periodic wave.
am·pli·tude
[am-pli-tood, -tyood]
NOUN
1.
the state or quality of being ample, especially as to breadth or width; largeness; greatness of extent.
2.
large or full measure; abundance; copiousness.
3.
mental range, scope, or capacity.
4.
Physics. the absolute value of the maximum displacement from a zero value during one period of an oscillation.
5.
Electricity the maximum deviation of an alternating current from its average value.
Source: Dictionary.com
Amplitudes are the maximum displacements of a vibration or oscillation, as measured from the mean position. They also are the maximum deviations of an alternating electrical current, or potential from the average value. The word originated from Latin 'amplus' meaning large.
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