zoo

1 of 2

noun

plural zoos
Synonyms of zoo
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
Within days, Swift was on the road again, with Kelce joining her in Australia for some koala-cuddling at the zoo. ABC News, 3 July 2026 According to the zoo, Cusi enjoys riding on mom Sago's chest. Aki Nace, CBS News, 1 July 2026 In the latest post, which featured 19 photos, Brittany shared snaps of her three children — daughters Sterling, 5, and Golden, 17 months, and son, Bronze, 3 —interacting with different aquatic and land animals at a zoo. Kayla Grant, PEOPLE, 1 July 2026 Fewer than 20,000 Sumatran orangutans remain in the wild, according to zoo officials. Reeti Malhotra july 1, Sacbee.com, 1 July 2026 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 5 Jul. 2026.

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster