I. ˈ ̷ ̷| ̷ ̷ adjective
1. : resistant to the action of flame : not burning on contact with flame ; especially : not tending to propagate fire if ignited
2. : safeguarded against causing destructive explosion (as by generating sparks) — used especially of machinery in mines, oil refineries, cereal mills
II. transitive verb
: to make flameproof