Look up initiator in Wiktionary, the free dictionary.

An initiator can refer to:

• A person that takes an initiative in making something happen.
• Pyrotechnic initiator, a device containing a pyrotechnic composition used primarily to ignite other, more difficult to ignite materials
• Radical initiator, chemical substances that can produce radical species under mild conditions
  • Photoinitiator, chemical substances that produce radical specials upon exposure to light
• SCSI initiator, the host-side endpoint of a SCSI session

[edit] See also

• Explosive booster
• Nuclear chain reaction

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