ignite

verb

ig·​nite ig-ˈnīt How to pronounce ignite (audio)
ignited; igniting

transitive verb

1
a
: to set afire
also : kindle
b
: to cause (a fuel) to burn
2
: to subject to fire or intense heat
especially : to render luminous by heat
3
a
: to heat up : excite
oppression that ignited the hatred of the people
b
: to set in motion : spark
ignite a debate

intransitive verb

1
: to catch fire
2
: to begin to glow
ignitability noun
ignitable adjective
or less commonly ignitible
igniter noun
or less commonly ignitor

Examples of ignite in a Sentence

The fire was ignited by sparks. The paper ignited on contact with sparks. a material that ignites easily Three wins in a row ignited the team. His proposal is igniting opposition.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
That ignited a small brouhaha on the field as other players got involved. Pete Grathoff, Kansas City Star, 13 Oct. 2025 But the blowout didn’t quite materialize because the Lobos were ignited by a 100-yard kickoff return from Damon Bankston on the first play of the second quarter. Jim Keyser, Idaho Statesman, 12 Oct. 2025 The rapid escalation of trade tensions between the world’s two largest economies has sunk stocks, rattling investors and industries by igniting fears of a repeat of the tit-for-tat tariff battle in spring, when levies on Chinese and American imports soared to around 145% and 120% respectively. John Liu, CNN Money, 12 Oct. 2025 For decades, a seemingly trivial issue — who gets the best parking spot and office — has ignited officewide tension. Jason Ma, Fortune, 12 Oct. 2025 See All Example Sentences for ignite

Word History

Etymology

Latin ignitus, past participle of ignire to ignite, from ignis

First Known Use

1666, in the meaning defined at transitive sense 2

Time Traveler
The first known use of ignite was in 1666

Browse Nearby Words

Cite this Entry

“Ignite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ignite. Accessed 13 Oct. 2025.

Kids Definition

ignite

verb
ig·​nite ig-ˈnīt How to pronounce ignite (audio)
ignited; igniting
1
a
: to set on fire : light
b
: to cause (a fuel mixture) to burn
2
: to catch fire
3
: to set in motion : spark
ignite a debate
ignitable
-ˈnīt-ə-bəl
adjective
igniter noun
also ignitor

More from Merriam-Webster on ignite

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!