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
2.
of, relating to, or belonging to the Crinoidea
3.
shaped like a lily
Derived forms
crinoidal (criˈnoidal)
adjective
Word origin
C19: from Greek krinoeidēs lily-like
crinoid in American English
(ˈkraɪˌnɔɪd; ˈkrɪnˌɔɪd)
adjective
1.
lily-shaped
2.
designating or of a class (Crinoidea) of echinoderms, some of which are flowerlike in form andare anchored by a stalk, others of which are free-swimming
noun
3.
an animal of this class, as a sea lily or feather star
Word origin
Gr krinoeidēs, lilylike < krinon, lily + -eidēs, -oid