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crinoid (adj.)

type of stalked echinoderm found in Paleozoic fossils and, living, at great depths in the sea, 1847, from Latinized form of Greek krinoeides "lily-like," from krinon "lily" (a foreign word of unknown origin) + -oeides "like" (see -oid). So called from their resemblance to a lily or tulip. The word is attested as an adjective in English, "lily-shaped," from 1836. Related: Crinoidal.

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Definitions of crinoid
1
crinoid (n.)
primitive echinoderms having five or more feathery arms radiating from a central disk;
2
crinoid (adj.)
of or relating to or belonging to the class Crinoidea;
From wordnet.princeton.edu