echinoderm

noun
echi·​no·​derm | \ i-ˈkī-nə-ˌdərm How to pronounce echinoderm (audio) \

Definition of echinoderm

: any of a phylum (Echinodermata) of radially symmetrical coelomate marine animals including the starfishes, sea urchins, and related forms

Keep scrolling for more

Other Words from echinoderm

echinodermatous \ i-​ˌkī-​nə-​ˈdər-​mə-​təs How to pronounce echinodermatous (audio) \ adjective

Examples of echinoderm in a Sentence

Recent Examples on the Web The footage of this pasta-looking echinoderm is actually pretty exciting because of a connection to food: Scientists got a first look at the creature eating. Rachel E. Greenspan, Time, "Let's Dive Into the Story of the 'Ravioli Starfish' That Looks Like a Stuffed-Pasta Shaped Wonder of the Sea," 11 July 2019 Ernst Haeckel’s intention was to make the natural forms of elusive organisms accessible to artists, and supply them with a new visual vocabulary of protists, mollusks, trilobites, siphonophores, fungi, and echinoderms. The New York Review of Books, "Lucy Jakub," 16 Dec. 2018 Bertrand Lefebvre of with the French National Center for Scientific Research (CNRS) and the Laboratoire de Géologie in Lyon, France, discovered that the millennia-old mystery animal is, in fact, an echinoderm—from the same family as a starfish. David Grossman, Popular Mechanics, "A 150-Year Old Weird Ancient Animal Mystery, Solved," 22 Feb. 2019 The first saw the emergence of brachiopods and molluscs, the second that of annelids, cnidarians, echinoderms and chordates (a group that includes the vertebrates). The Economist, "The Cambrian explosion was caused by a lack of oxygen, not an abundance," 7 June 2018 That is in contradistinction to Cambrian fossils, among which are found representatives of all the main animal groups (annelids, arthropods, brachiopods, chordates, cnidarians, echinoderms, molluscs and so on) that are around today. The Economist, "The Cambrian explosion was caused by a lack of oxygen, not an abundance," 7 June 2018 The lure of lucrative echinoderms may have proved too strong for three Southeast fishermen. Zaz Hollander, Anchorage Daily News, "Southeast Alaska fishermen illegally caught $35,000 worth of sea cucumbers, troopers say," 15 Mar. 2018 Feather stars are echinoderms, like the more familiar sea stars. National Geographic, "Mesmerizing Video Shows Swimming Feather Star," 9 Dec. 2016 Which has members of the indigenous community particularly worried about the fate of these strange echinoderms. Lorraine Boissoneault, Smithsonian, "Is the Mysterious Sea Cucumber Slipping Out of Our Grasp?," 4 Nov. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'echinoderm.' 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 echinoderm

1835, in the meaning defined above

History and Etymology for echinoderm

New Latin Echinodermata, phylum name, from echin- + -dermata (ultimately from Greek derma skin)

Keep scrolling for more

Learn More about echinoderm

Time Traveler for echinoderm

Time Traveler

The first known use of echinoderm was in 1835

See more words from the same year

Statistics for echinoderm

Cite this Entry

“Echinoderm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/echinoderm. Accessed 31 May. 2020.

More from Merriam-Webster on echinoderm

Rhyming Dictionary: Words that rhyme with echinoderm

Britannica.com: Encyclopedia article about echinoderm

Comments on echinoderm

What made you want to look up echinoderm? 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!