crinoid crinkly • crinoidal · · · Info · Definitions · Characters · · crinoid · · Text Latin · · Script 7 · · Length Definitions · · · (noun) primitive echinoderms having five or more feathery arms radiating from a central disk. · · Noun Definition 1 (adj) of or relating to or belonging to the class Crinoidea. · · Adjective Definition 1 Characters · · c latin small letter c U+0063 d latin small letter d U+0064 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072