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Set off

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Posts: 69
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(@dhenderson)
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Joined: 18 years ago

How did "set off" come to mean "turn on," as in: "If you burn those muffins, it will set off the fire alarm"?

Curiously,

Dan

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(@martha-barnette)
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Joined: 18 years ago

That's an odd one, Dan. I'm not sure, except I Think I recall once reading is that there's no word with a longer dictionary entry in the OED than "set." Is that right, Grant?

I think the word "logos" gets that distinction for the Greek-English lexicon, btw.

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