- 1[usually singular] something that helps someone or something to develop better or more quickly Books provide children with ideas and a stimulus for play. The new tax laws should act as a stimulus to exports.
- 2something that produces a reaction in a human, an animal, or a plant sensory/verbal/visual stimuli The animals were conditioned to respond to auditory stimuli (= sounds).
stimulus
nounNAmE//ˈstɪmyələs//
(pl. stimuli NAmE//ˈstɪmyəˌlaɪ//
) stimulus (to/for something) stimulus (to do something)Check pronunciation: stimulus