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

criˈnoidal adj

'crinoid' also found in these entries:
In the English description:

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