Topic: ELECTRICITY
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spark2
1 [transitive] also spark something ↔ off to be the cause of something, especially trouble or violence [= provoke]: 
The police response sparked outrage in the community.A discarded cigarette sparked a small brush fire.
The police response sparked outrage in the community.A discarded cigarette sparked a small brush fire.2 to make someone feel interested, hopeful etc : topics that spark children's imaginations
spark somebody's interest/hope/curiosity etc
topics that spark children's imaginations3 [intransitive]TPE to produce sparks of fire or electricity
