amplitude

(am′plĭ-tood″ )

To hear audio pronunciation of this topic, purchase a subscription or log in.

[L. amplitudo ]

1. Amount, extent, size, abundance, or fullness.
2. In physics, the extent of movement, as of a pendulum or sound wave. The maximum displacement of a particle, as that of a string vibrating, as measured from the mean to the extreme.
3. Magnitude of an action potential.
4. In radiography, the extent of tube travel during tomography.

There's more to see -- the rest of this topic is available only to subscribers.