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crinoid
[ krahy-noid, krin-oid ]
noun
- 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.
adjective
- belonging or pertaining to the Crinoidea.
crinoid
/ ˈkrɪn-; ˈkraɪnɔɪd /
noun
- 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
adjective
- of, relating to, or belonging to the Crinoidea
- shaped like a lily
crinoid
/ krī′noid′ /
- 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.
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Derived Forms
- criˈnoidal, adjective
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Other Words From
- cri·noidal adjective
- non·crinoid adjective
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Word History and Origins
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Word History and Origins
Origin of crinoid1
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Example Sentences
The ossicles, or plates which cover the dorsal surface, are free, making the crinoid an animal of innumerable joints.
This subkingdom comprises at present such familiar forms as the crinoid, the starfish, and the sea urchin.
The cystoid reaches its climax, but there appear now two higher types of echinoderms,—the crinoid and the starfish.
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.
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