fireball
noun
fire·ball
ˈfī(-ə)r-ˌbȯl 
1
: a ball of fire
also
: something resembling such a ball
… the primordial fireball associated with the beginning of the universe. —
Scientific American
Scientific American 2
: a brilliant meteor that may trail bright sparks
3
: the highly luminous cloud of vapor and dust created by a nuclear explosion
4
: a highly energetic person
Examples of fireball in a Sentence
The house erupted into a fireball.
what this club needs is a fireball who will bring some sorely needed energy and enthusiasm
Recent Examples on the Web
To this end, the LLNL has built a special machine called a plasma flow reactor that acts like a kind of mini artificial nuclear fireball simulator.
—Christopher McFadden, Interesting Engineering, 24 May 2026
After the landing, Starship toppled over into the ocean waters and exploded in a magnificent fireball (again, as planned) as SpaceX workers cheered.
—Josh Dinner, Space.com, 23 May 2026
There was no fireball this time until the very end.
—Marcia Dunn, Los Angeles Times, 23 May 2026
As expected, the ship—wider than and nearly as long a Boeing 777 jetliner—tipped over and exploded in a fireball, putting an exclamation point on V3’s trip halfway around the world from the Texas Gulf Coast.
—Stephen Clark, ArsTechnica, 23 May 2026
See All Example Sentences for fireball
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Christopher McFadden, Interesting Engineering, 24 May 2026
After the landing, Starship toppled over into the ocean waters and exploded in a magnificent fireball (again, as planned) as SpaceX workers cheered.
—Josh Dinner, Space.com, 23 May 2026
There was no fireball this time until the very end.
—Marcia Dunn, Los Angeles Times, 23 May 2026
As expected, the ship—wider than and nearly as long a Boeing 777 jetliner—tipped over and exploded in a fireball, putting an exclamation point on V3’s trip halfway around the world from the Texas Gulf Coast.
—Stephen Clark, ArsTechnica, 23 May 2026
See All Example Sentences for fireball
Cite this Entry
“Fireball.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fireball. Accessed 27 May. 2026.
Copy CitationKids Definition
fireball
noun
fire·ball
-ˌbȯl
1
: a ball of fire
2
: a very bright meteor
3
: the glowing cloud of vapor and dust created by a nuclear explosion
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