amplitude

UK:^*^*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈæmplɪtjuːd/

US:USA pronunciation: IPAUSA pronunciation: IPA/ˈæmplɪˌtud, -ˌtjud/

US:USA pronunciation: respellingUSA pronunciation: respelling(am′pli to̅o̅d′, -tyo̅o̅d′)

am•pli•tude n. [uncountable]

See -ampl-.

am•pli•tude n.

the state or quality of being ample, esp. as to breadth or width;
largeness;
greatness of extent.
large or full measure;
abundance;
copiousness.
mental range, scope, or capacity.
Physicsthe absolute value of the maximum displacement from a zero value during one period of an oscillation.
Electricitythe maximum deviation of an alternating current from its average value.
Astronomythe arc of the horizon measured from the east or west point to the point where a vertical circle through a heavenly body would intersect the horizon.
Mathematicsargument (def. 8b).

Collins Concise English Dictionary © HarperCollins Publishers::

amplitude /ˈæmplɪˌtjuːd/ n

greatness of extent; magnitude
abundance or copiousness
breadth or scope, as of the mind
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
(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
the maximum variation from the zero or mean value of a periodically varying quantity

Etymology: 16th Century: from Latin amplitūdō breadth, from amplus spacious

'amplitude' also found in these entries (note: many are not synonyms or translations):

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