stimulus

Pronunciation

• (US) IPA ^(key): /ˈstɪm.jə.ləs/

• Audio (UK)

  (file)

Noun

Singular stimulus

Plural stimuli

1. A stimulus is an event that causes a system to change its output or behavior.

   The primary goal of the $31 billion economic stimulus package was to increase job growth.

2. (psychology) A stimulus is something that is noticed by the senses.

   The mice responded with fear to the painful stimulus.