starfish

noun

star·​fish ˈstär-ˌfish How to pronounce starfish (audio)
: any of a class (Asteroidea) of echinoderms that have a body of usually five arms radially arranged about a central disk and feed largely on mollusks (such as oysters)

called also sea star

Examples of starfish in a Sentence

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.
The historic Bahia Honda bridge, which was completed in 1912 by Standard Oil founder Henry Flagler, still stands today and is a habitat for lobsters, starfish, sea turtles, and more. Teaghan Skulszki, Travel + Leisure, 6 Sep. 2025 This viral scientific mission even included a plump starfish resembling a beloved cartoon character. Jade Walker, CNN Money, 25 Aug. 2025 The cognitive competence of, say, a dolphin or a chimpanzee is hugely superior to the competence of a lobster or a starfish. Jonny Thomson, Big Think, 20 Aug. 2025 When scientists revisited the site more than 40 years later, the scars were still sharply visible, and the disturbed areas remained largely devoid of the sponges, corals, and starfish that had once lived there. Ingmar Rentzhog, Forbes.com, 14 Aug. 2025 See All Example Sentences for starfish

Word History

First Known Use

1538, in the meaning defined above

Time Traveler
The first known use of starfish was in 1538

Browse Nearby Words

Cite this Entry

“Starfish.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/starfish. Accessed 10 Sep. 2025.

Kids Definition

starfish

noun
star·​fish ˈstär-ˌfish How to pronounce starfish (audio)
: any of a class of echinoderms that have five arms arranged evenly around a central disk and feed largely on mollusks (as oysters)

More from Merriam-Webster on starfish

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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