co·mat·u·lid (kə-māch'ə-lĭd) n.
pl.co·mat·u·lids also co·mat·u·lae (-lē) Any of various marine invertebrates of the class Crinoidea, such as the sea lilies and feather stars, that are attached to a surface by a stalk when young but may be free-swimming as adults.
[From New Latin Comātulidae, former family name, from Late Latin comātulus, having neatly curled hair, from Latin comātus, having long hair; see comate1.]