(ăk-sĕl″ĕr-ā′shŭn)
[Pronunciation]
[L. accelerans, hastening]

1. An increase in the speed of an action or function, such as pulse or respiration.
2. The rate of change in velocity for a given unit of time.

Subentries:
angular acceleration
central acceleration
centripetal acceleration
fetal heart rate acceleration
linear acceleration
negative acceleration
positive acceleration
standard acceleration of free fall