ignite

verb

1. (transitive)to set fire to (something), to light (something)
2. (transitive)to spark off (something), to trigger

   “ignite curiosity”

   “ignite someone's interest”

   “Our observations on the way up had been mixed but the deep, crisp cold of the Peruvian night followed by a crystal clear dawn re-ignited our enthusiasm and sent us scampering across the frozen snow bowl […]”

3. (intransitive)to commence burning.
4. (transitive)To subject to the action of intense heat; to heat strongly; often said of incombustible or infusible substances.

   “to ignite iron or platinum”