amplitude (redirected from Peak amplitude)

amplitude /am·pli·tude/ (am´plĭ-tldbomacd)

1. largeness, fullness; wideness in range or extent.

2. in a phenomenon that occurs in waves, the maximal deviation of a wave from the baseline.

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amplitude of accommodation  amount of accommodative power of the eye.

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amplitude

[am′plityo̅o̅d]

Etymology: L, amplus, wide

the width or breadth of range or extent, such as amplitude of accommodation or amplitude of convergence.

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amplitude [am´plĭ-to̳d]

1. largeness, fullness; wideness or breadth of range or extent.

2. in conventional tomography, the motion of the x-ray tube (with the cassette moving in the opposite direction) during the x-ray exposure.

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amplitude

largeness, fullness; wideness or breadth of range or extent.

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amplitude mode

see A-mode ultrasonography.

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amplitude

Cardiac pacing The maximum absolute value attained by an electrical waveform, or any quantity that varies periodically; pacemaker amplitudes express the value of the potential difference in volts or current flow in amperes; pacemaker output pulses have typically averaged 5 volts and 10 milliamps. See Relative fusional vergence.