- (America) IPA: /ˈstɪm.jə.ləs/
stimulus (plural stimuluses or stimuli)
Any external phenomenon that has an influence on a system, by triggering or modifying an internal phenomenon.
- an economic stimulus
(physiology) Something external that elicits or influences a physiological or psychological activity or response. (psychology) Anything effectively impinging upon any of the sensory apparatuses of a living organism, including physical phenomena both internal and external to the body. Anything that induces a person to take action.
- (anything that may have an impact or influence) influence
- (anything that induces a person to take action) impetus, impulse, spur