|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.