|Origin:||'sharp stick for making animals move'|
stim‧u‧lus plural stimuli
1 [countable usually singular, uncountable]
something that helps a process to develop more quickly or more strongly:
Tax cuts provided the stimulus which the slow economy needed.
The discovery of oil acted as a stimulus to industrial development.
something that makes someone or something move or react:
At this age, the infant begins to react more to visual stimuli.