trigger-v; 1 Senses

Sense Number 1: set in motion, activate

Showing them a Coke can while they sipped, but not a Pepsi can, triggered a reaction in certain brain areas.
Okonkwo had a violent temper that was immediately triggered in response to actions that he deemed to be weak.
Wesley heard about a lonely female of a rare cycad plant, and his match-making instincts were immediately triggered.
Smoke billowed out into the back hall and triggered the alarm.
Well, the "dead" fish flopped around, triggered the gun and sent the sportsman off to meet his maker.
My earlier comparison of the Japanese and Chinese management style triggered off some reactions.

VerbNet: NP
FrameNet: NP
PropBank: trigger.01,trigger.02
WordNet 3.0 Sense Numbers: 1, 2
WordNet Verb Particle Constructions, Multiword Expressions:
trigger_off 1