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
Sadly, the light of the full moon will hide all but the brightest shooting stars around the peak, but there's always a chance that a dramatic fireball could appear to outshine even Venus in the night sky.
—
Anthony Wood,
Space.com,
2 July 2026
While the shower typically produces only about five meteors per hour, it’s known for bright fireballs that can stand out in the night sky.
—
Julia Gomez,
USA Today,
1 July 2026
The Delta Aquariids can produce around 25 meteors per hour in ideal conditions, while the Alpha Capricornids usually produce only about five per hour but are known for bright fireballs.
—
Jamie Carter,
Forbes.com,
1 July 2026
Nearly a month has passed since the New Glenn rocket exploded on its launch pad in Florida, creating a massive fireball.
—
Eric Berger,
ArsTechnica,
26 June 2026
See All Example Sentences for fireball
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show current usage.
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Anthony Wood,
Space.com,
2 July 2026
While the shower typically produces only about five meteors per hour, it’s known for bright fireballs that can stand out in the night sky.
—
Julia Gomez,
USA Today,
1 July 2026
The Delta Aquariids can produce around 25 meteors per hour in ideal conditions, while the Alpha Capricornids usually produce only about five per hour but are known for bright fireballs.
—
Jamie Carter,
Forbes.com,
1 July 2026
Nearly a month has passed since the New Glenn rocket exploded on its launch pad in Florida, creating a massive fireball.
—
Eric Berger,
ArsTechnica,
26 June 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 5 Jul. 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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