initiator


Concise Oxford English Dictionary © 2008 Oxford University Press:
initiator/ɪˈnɪʃieɪtə(r)/
noun
  • 1 a person or thing that initiates.
  • 2 Chemistry a substance which starts a chain reaction.
  • 3 an explosive or device used to detonate the main charge.
'initiator' also found in these Oxford entries:

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