animal kingdom

noun

: a basic group of natural objects that includes all living and extinct animals compare mineral kingdom, plant kingdom

Examples of animal kingdom in a Sentence

Recent Examples on the Web
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That means dreaming — or something close to it — may have emerged more than once across the animal kingdom in brains that look nothing like ours. Samantha Agate, Miami Herald, 27 Mar. 2026 The biology of aging is so conserved or shared across the animal kingdom. Anderson Cooper, CBS News, 22 Mar. 2026 Somewhere over the course of their evolution, the class of hydrozoans — which includes certain kinds of jellyfish, hydras, and colonial siphonophores such as the Portuguese man-of-war — lost the genes that operate circadian clocks in the rest of the animal kingdom. Marlowe Starling, Quanta Magazine, 20 Mar. 2026 In other words, eliminating them from the animal kingdom would be like yanking an entire tier of Jenga blocks out of the middle of the tower. Jackie Flynn Mogensen, Scientific American, 15 Mar. 2026 See All Example Sentences for animal kingdom

Word History

First Known Use

1650, in the meaning defined above

Time Traveler
The first known use of animal kingdom was in 1650

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Cite this Entry

“Animal kingdom.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/animal%20kingdom. Accessed 2 Apr. 2026.

Kids Definition

animal kingdom

noun
: a basic group of natural objects that includes all living and extinct animals compare mineral kingdom, plant kingdom

Medical Definition

animal kingdom

noun
: a basic group of natural objects that includes all living and extinct animals compare mineral kingdom, plant kingdom
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