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[krahy-noid, krin-oid] /ˈkraɪ nɔɪd, ˈkrɪn ɔɪd/
any echinoderm of the class Crinoidea, having a cup-shaped body to which are attached branched, radiating arms, comprising the sea lilies, feather stars, and various fossil forms.
belonging or pertaining to the Crinoidea.
Origin of crinoid
1825-35; < Greek krinoeidḗs, equivalent to krín(on) lily + -oeidēs -oid
Related forms
crinoidal, adjective
noncrinoid, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for crinoid
Historical Examples
  • Applied to the cup-shaped body of a crinoid (Echinodermata).

    The Ancient Life History of the Earth Henry Alleyne Nicholson
  • The ossicles, or plates which cover the dorsal surface, are free, making the crinoid an animal of innumerable joints.

    The Sea-beach at Ebb-tide Augusta Foote Arnold
  • This subkingdom comprises at present such familiar forms as the crinoid, the starfish, and the sea urchin.

    The Elements of Geology William Harmon Norton
  • The cystoid reaches its climax, but there appear now two higher types of echinoderms,—the crinoid and the starfish.

    The Elements of Geology William Harmon Norton
  • The clay came into notice late in the 18th century on account of the local abundance of the crinoid Apiocrinus Parkinsoni.

  • Fishes, Mollusca, and Crustacea silently ploughed their way in the depths of the sea, and the immovable crinoid lived there.

British Dictionary definitions for crinoid


/ˈkraɪnɔɪd; ˈkrɪn-/
any primitive echinoderm of the class Crinoidea, having delicate feathery arms radiating from a central disc. The group includes the free-swimming feather stars, the sessile sea lilies, and many stemmed fossil forms
of, relating to, or belonging to the Crinoidea
shaped like a lily
Derived Forms
crinoidal, adjective
Word Origin
C19: from Greek krinoeidēs lily-like
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for crinoid

1836, Latinized from Greek krinoeides "lily-like," from krinon "lily" (a foreign word of unknown origin) + -oeides "like" (see -oid).

Online Etymology Dictionary, © 2010 Douglas Harper
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crinoid in Science
Any of various marine echinoderms of the class Crinoidea. Crinoids have a cup-shaped body with five or more feathery arms and sometimes a stalk for attachment to a surface. The arms contain reproductive organs and sensory tube feet. Crinoids were common during the Paleozoic Era and are important index fossils. Sea lilies and feather stars are types of crinoids.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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