WordReference Random House Unabridged Dictionary of American English © 2015
cri•noid  (krīnoid, krinoid), 
n. 
  1. Invertebratesany 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.

adj. 
  • Invertebratesbelonging or pertaining to the Crinoidea.
  • lilylike.
  • Etymology:
    • Greek krinoeidé̄s, equivalent. to krín(on) lily + -oeidēs -oid
    • 1825–35
    cri•noidal, adj. 


    Collins Concise English Dictionary © HarperCollins Publishers::

    crinoid /ˈkraɪnɔɪd ˈkrɪn-/ n
    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
    adj
    1. of, relating to, or belonging to the Crinoidea
    2. shaped like a lily
    Etymology: 19th Century: from Greek krinoeidēs lily-like

    criˈnoidal adj



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