Where does “flashpoint” come from?

Flashpoint comes from English point, which derives from Middle English flasshen and flasken, tracing back to Latin punctus, the past participle of pungere meaning to prick or pierce.

flashpoint (English): The lowest temperature at which a liquid can form...

Definitions

  1. The lowest temperature at which a liquid can form...

Ancestry of “flashpoint”, step by step

flashpoint traces back through two separate lines of ancestry.

via English point

StepLanguageWordMeaning
1EnglishpointA discrete division of something; A sharp...
2Middle Englishpoint
3Old Frenchpointa sting; a prick; moment; time; dot
4Latinpūnctumpoint
5Latinpunctuspricked, punctured, pierced, having been pricked;...
6Latin-tusForms the past participle of verbs; Forms...
7Proto-Italic-tus
8Proto-Indo-European-tusDerives action nouns from verb roots

via English Flash

StepLanguageWordMeaning
1EnglishFlashA multimedia platform, most often used for adding animation and interactivity to webpages
2Middle Englishflasshen
Every word from Proto-Indo-European -tus
flashpoint — Etymology, Origin & Word History | Etymology Explorer