Crossword clue: the lowest temperature at which the vapor of a combustible liquid can be ignited in air

The most common answer is flashpoint (10 letters).

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

flashpoint 10 letters wn-def

the lowest temperature at which the vapor of a combustible liquid can be ignited in air