zooid

noun
zo·​oid | \ ˈzō-ˌȯid How to pronounce zooid (audio) \

Definition of zooid

: one of the asexually produced individuals of a compound organism (such as a bryozoan, siphonophore, or coral colony)

Examples of zooid in a Sentence

Recent Examples on the Web Each siphonophore is a colony of individual zooids, clusters of cells that clone themselves thousands of times to produce an extended, stringlike body. Devi Lockwood, New York Times, "This Might Be the Longest Creature Ever Seen in the Ocean," 14 Apr. 2020 The creatures, made up of individual zooids -- small, multicellular organisms -- normally reside in warmer waters, like the tropics, and usually don't travel farther north than the waters off southern California. Ted Sickinger, OregonLive.com, "Police looking for shooter after one injured in Keizer," 22 Apr. 2018 Inside the wall of this gelatinous tube, which can get up to 60 cm, individual zooids are tightly packed together. The Washington Post, OregonLive.com, "Strange 'sea pickles' keep washing ashore in the Pacific Northwest -- and scientists are baffled," 29 June 2017 These zooids have an incurrent and excurrent siphon and use cilia to pump water for feeding, respiration and movement. The Washington Post, OregonLive.com, "Strange 'sea pickles' keep washing ashore in the Pacific Northwest -- and scientists are baffled," 29 June 2017 In fact, these giants, called pyrosomes, are actually made up of thousands of much smaller creatures called zooids. National Geographic, "Sea Sapphires and 5 Other Shiny Ocean Creatures," 29 Mar. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'zooid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of zooid

1851, in the meaning defined above

History and Etymology for zooid

Greek zôion "animal" + -oid entry 1 — more at zoo-

Note: Term introduced by T. H. huxley in "Observations upon the Anatomy and Physiology of Salpa and Pyrosoma," "Received February 26,—Read March 27, 1851," Philosophical Transactions of the Royal Society for the Year 1851, Part II, p. 579.

Keep scrolling for more

Learn More about zooid

Time Traveler for zooid

Time Traveler

The first known use of zooid was in 1851

See more words from the same year

Statistics for zooid

Last Updated

21 Apr 2020

Cite this Entry

“Zooid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/zooid. Accessed 5 Jun. 2020.

Keep scrolling for more

More Definitions for zooid

zooid

noun
zo·​oid | \ ˈzō-ˌȯid How to pronounce zooid (audio) \

Medical Definition of zooid

: one of the asexually produced individuals of a compound organism (as a coral colony)

More from Merriam-Webster on zooid

Britannica.com: Encyclopedia article about zooid

Comments on zooid

What made you want to look up zooid? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

May 2020 Words of the Day Quiz

  • a blooming wisteria tree
  • Which is a synonym of exiguous?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

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