GRE TOEFL ignite Definition To set on fire; to cause combustion or a strong reaction. Example "The spark ignited the fuel and started the engine." Sign in to save GRE PDF — $25 TOEFL PDF — $25 ← igneous ignoble → Study tips featuring "ignite" TOEFL Academic Vocabulary: Study by Topic Related words GRE awe GRE smithereens GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct GRE aberrant