The Collaborative International Dictionary
Crinoidal
Crinoidal \Cri*noid"al\ (kr[-i]*noid"al), a. (Zo["o]l.) Of pertaining to crinoids; consisting of, or containing, crinoids. [1913 Webster] ||
Wiktionary
crinoidal
a. (context zoology English) Relating to, consisting of, or containing crinoids.