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.
Boise State finally got a scoring drive together in the second quarter behind Sire Gaines and Dylan Riley, who ignited a 14-play, 75-yard TD drive in the second quarter that was capped by Riley’s 9-yard touchdown run and tied the game at 7-7. Jim Keyser, Idaho Statesman, 16 Nov. 2025 Cardell Williams then took the direct snap and raced in untouched for the winner with 9 seconds left, igniting a sideline celebration scene that hit another level when the Hornets held off the Vandals’ Hail Mary toward the end zone. Joe Davidson, Sacbee.com, 16 Nov. 2025 The project has ignited months of heated debate across the south of Boston, with critics arguing that using taxpayer money to display Catholic imagery on government property violates both the Massachusetts Constitution and the First Amendment’s establishment clause. Sarah Rumpf-Whitten, FOXNews.com, 16 Nov. 2025 Most dry grasses, dead leaves, and other tree litter could easily ignite and spread fire quickly. Nc Weather Bot, Charlotte Observer, 16 Nov. 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 17 Nov. 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!