01 n. the lowest temperature at which the vapors given off by a volatile liquid exposed to air will burst into flame when approached by a flame. …
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1.
the lowest temperature at which the vapors given off by a volatile liquid exposed to air will burst into flame when approached by a flame. Also called flashing point. Also: <cref>flashing point</cref>
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2.
That point in time or that degree of provocation at which someone will suddenly begin to act vigorously; -- often used in reference to angry reactions.