ˈaktəs, esp in sense 2 ˈäkˌtu̇s noun
( plural actus )
Etymology: Latin, literally, driving, doing, act, deed — more at act
1. Roman law : the right to drive a beast or a vehicle over another's land — distinguished from iter and via
2.
[Medieval Latin (translation of Greek energeia ), from Latin actus — more at energy ]
: an act or thing done ; specifically : a mental or spiritual act — used in Scholasticism to render Aristotle's terms energeia and entelecheia ; compare energy , entelechy