Definition of "ignition" []

• The raising of a substance to its ignition point, as by electric current, friction, or mechanical shock. (noun)
• An electrical system, typically powered by a battery or magneto, that provides the spark to ignite the fuel mixture in an internal-combustion engine. (noun)
• A switch that activates this system. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "They don't seem to make em with anything but plastic stocks, but I think the electric spark ignition is such a great idea, I'd love to try it out."
• "As I noted in an earlier post, a keyed ignition is far more effective at turning off a runaway engine than a new high-tech keyless engine, not to mention safer."
• "So, perfect deduction of the environmental disaster now in ignition may be impossible."