flashpoint

English Thesaurus

1. the lowest temperature at which the vapor of a combustible liquid can be ignited in air (noun.attribute)

hypernym	:	temperature,
definition	:	the degree of hotness or coldness of a body or environment (corresponding to its molecular activity) (noun.attribute)

2. point at which something is ready to blow up (noun.state)

hypernym	:	criticality,
definition	:	a critical state; especially the point at which a nuclear reaction is self-sustaining (noun.state)