zoo

1 of 2

noun

plural zoos
1
: a facility with usually indoor and outdoor settings where living, typically wild animals are kept especially for public exhibition

called also zoological garden, zoological park

2
: a place, situation, or group marked by crowding, confusion, or unrestrained behavior
The convention was a zoo.

zoo-

2 of 2

combining form

variants or before a vowel zo-
1
: animal : animal kingdom or kind
zooid
zoology
2
: motile
zoospore

Examples of zoo in a Sentence

Noun The sixth grade classroom was a zoo after recess. The supermarket was a real zoo on the night before the storm.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Noun
In April 2005, YouTube started hosting video clips, its first 19 second upload about a trip to the zoo. Merrill Fabry, Time, 9 Oct. 2025 There is also a petting farm and zoo and a corn maze featuring Big Foot among other activities. Andy Humbles, Nashville Tennessean, 9 Oct. 2025 The zoo has invited Cora’s human friends and fans to drop off favorite memories and photos at the zoo, located in Topeka’s Gage Park. Lisa Gutierrez, Kansas City Star, 9 Oct. 2025 They are typically found in more arid scrublands or coconut plantations, the zoo said, and feast on grass, flowers, berries and fruit. Irene Wright, Miami Herald, 7 Oct. 2025 See All Example Sentences for zoo

Word History

Etymology

Noun

short for zoological garden

Combining form

borrowed from Greek zōo-, zōio-, combining form from zôion "animal," derivative from the base of zṓō, zṓein (Homeric), zô, zên (Attic) "to be alive, live," going back to Indo-European *gwi̯éh3-(u)- "live" (whence also Tocharian B śāyau "[I] live"), full grade of a stem attested elsewhere with zero grade as *gwih3-u-, whence Latin vīvō, vīvere "to live," Old Church Slavic živǫ, žiti, Old Prussian giwa "(s/he) lives," Latvian dzīvu "(I) live," Sanskrit jīvati "(s/he) lives," Avestan juuaiti

Note: See also bio-, quick entry 1.

First Known Use

Noun

1835, in the meaning defined at sense 1

Time Traveler
The first known use of zoo was in 1835

Browse Nearby Words

Cite this Entry

“Zoo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/zoo. Accessed 13 Oct. 2025.

Kids Definition

zoo

noun
plural zoos
: a garden or park where living usually wild animals are kept for showing to the public

More from Merriam-Webster on zoo

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