Main Entry: am·pli·tude

Pronunciation: \-ˌtüd, -ˌtyüd\

Function: noun

Date: 1542

1 : extent of dignity, excellence, or splendor
2 : the quality or state of being ample : fullness, abundance
3 : the extent or range of a quality, property, process, or phenomenon: as a : the extent of a vibratory movement (as of a pendulum) measured from the mean position to an extreme b : the maximum departure of the value of an alternating current or wave from the average value
4 : the angle assigned to a complex number when it is plotted in a complex plane using polar coordinates —called also argument — compare absolute value 2