noun
efficient cause
In Aristotelian philosophy, the agent or force that brings something into being; one of the four causes. Often contrasted with 作用因.
See also: 作用因
アリストテレスの四原因説では、動力因は変化を引き起こすものを指す。
In Aristotle's theory of the four causes, the efficient cause refers to that which brings about change.