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bullfrog

American  
[bool-frog, -frawg] / ˈbʊlˌfrɒg, -ˌfrɔg /

noun

  • bullfrogs
    plural
  1. a large frog, especially the North American Rana catesbeiana, having a deep voice.


bullfrog British  
/ ˈbʊlˌfrɒɡ /

noun

  1. any of various large frogs, such as Rana catesbeiana ( American bullfrog ), having a loud deep croak

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms


Etymology

Origin of bullfrog

1690–1700, bull 1 + frog 1; so called from its size and voice


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Researchers reviewed existing scientific literature, examined museum specimens from around the world, analyzed fungal genetics from Brazilian bullfrog farms, and studied bullfrogs sold internationally.

From Science Daily ● Jan. 19, 2026

The first season, titled “Cabin in the Woods,” followed a mouse, a raccoon and a bullfrog.

From Los Angeles Times ● Oct. 27, 2025

"I sing like a bullfrog," he once told record producer Fred Foster.

From BBC ● Sep. 30, 2024

By the time spring arrived, not a single bullfrog remained; maybe half of the usual contingent of green frogs appeared to have survived.

From Seattle Times ● Oct. 18, 2023

“And they should know,” he said, looking like a serious bullfrog.

From "Fallen Angels" by Walter Dean Myers

Cullmann had noticed tadpoles on a previous visit after heavy rains and returned the following month to find ponds and puddles full of young bullfrogs.

From BBC ● Aug. 25, 2026

To further test the theory that Bd-Brazil spread internationally through bullfrog exports, researchers analyzed historical trade records, fungal genetics from Brazilian frog farms, and genetic data from bullfrogs sold in foreign markets.

From Science Daily ● Jan. 19, 2026

To Walter Kerr, also writing in The Times, she was “that cousin of bullfrogs and consort of weary gods,” described as “discreet, dangerous … and gratifyingly funny.”

From New York Times ● Jan. 4, 2024

Their numbers have been cut in recent generations by invasive bullfrogs, which eat the smaller, juvenile turtles, and ravaged further by warming temperatures and ever-expanding cities.

From Seattle Times ● Oct. 3, 2023

Hopeful yellow bullfrogs cruised the scummy pond for mates.

From "The God of Small Things" by Arundhati Roy

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