|crinoid (ˈkraɪnɔɪd, ˈkrɪn-)|
|1.||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|
|2.||of, relating to, or belonging to the Crinoidea|
|3.||shaped like a lily|
|[C19: from Greek krinoeidēs lily-like]|
|crinoid (krī'noid') Pronunciation Key
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.
any marine invertebrate of the class Crinoidea (phylum Echinodermata) usually possessing a somewhat cup-shaped body and five or more feathery arms. The arms are edged with feathery projections (pinnules) that contain the reproductive organs and carry numerous tube feet with sensory functions. The tentacles also have open grooves, along which cilia (minute, hairlike projections) sweep food particles toward the mouth
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