In physics, the amplitude of a sound wave or electrical signal is its strength.
[technical]
As we fall asleep the amplitude of brain waves slowly becomes greater.
2. uncountable noun
Amplitude is the quality of being large in size or quantity.
[formal]
...a man of nineteenth-century amplitude.
More Synonyms of amplitude
amplitude in British English
(ˈæmplɪˌtjuːd)
noun
1.
greatness of extent; magnitude
2.
abundance or copiousness
3.
breadth or scope, as of the mind
4. astronomy
the angular distance along the horizon measured from true east or west to the point of intersection of the vertical circle passing through a celestial body
5. Also called: argument mathematics
(of a complex number) the angle that the vector representing the complex number makes with the positive real axis. If the point (x, y) has polar coordinates (r, θ), the amplitude of x + iy is θ, that is, arctan y/x
Compare modulus (sense 2), See also Argand diagram
6. physics
the maximum variation from the zero or mean value of a periodically varying quantity
Word origin
C16: from Latin amplitūdō breadth, from amplus spacious
amplitude in American English
(ˈæmpləˌtud; ˈæmpləˌtjud)
noun
1.
the quality of being ample or the amount or degree to which a thing extends
2.
an amount that is more than enough; abundance; fullness
3.
scope or breadth, as of mind
4.
the angular distance of a star from the true east or west point of the horizon, at the moment of its rising or setting
5.
the extreme range of a fluctuating quantity, as an alternating current or the swing of a pendulum, generally measured from the average or mean to the extreme