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
From supermoons to surprise fireballs, space news seems to get more exciting every year, and 2026 is shaping up to be no different.
—Tiffany Acosta, AZCentral.com, 3 Dec. 2025
But Ryle and his students weren’t the only ones who saw the exceptionally bright meteor, also known as a fireball.
—Gillian Stawiszynski, Cincinnati Enquirer, 3 Dec. 2025
With hints of Harry Potter-like magic afoot, the clip zooms to a close with a glimpse of a giant fireball glowing inside the building as confetti rains down on the group during a final, all-hands on-deck dance routine.
—Gil Kaufman, Billboard, 21 Nov. 2025
Larger pieces can give rise to brilliant fireballs, which can outshine even the brightest planets in the night sky.
—Anthony Wood, Space.com, 16 Nov. 2025
See All Example Sentences for fireball
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Tiffany Acosta, AZCentral.com, 3 Dec. 2025
But Ryle and his students weren’t the only ones who saw the exceptionally bright meteor, also known as a fireball.
—Gillian Stawiszynski, Cincinnati Enquirer, 3 Dec. 2025
With hints of Harry Potter-like magic afoot, the clip zooms to a close with a glimpse of a giant fireball glowing inside the building as confetti rains down on the group during a final, all-hands on-deck dance routine.
—Gil Kaufman, Billboard, 21 Nov. 2025
Larger pieces can give rise to brilliant fireballs, which can outshine even the brightest planets in the night sky.
—Anthony Wood, Space.com, 16 Nov. 2025
See All Example Sentences for fireball
Cite this Entry
“Fireball.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fireball. Accessed 8 Dec. 2025.
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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