echinoid

== English == === Etymology === From echino- +‎ -oid. === Pronunciation === IPA(key): /ˈɛk.əˌnɔɪd/, /əˈkaɪˌnɔɪd/, /iˈkaɪˌnɔɪd/ Hyphenation: e‧chi‧noid === Noun === echinoid (plural echinoids) (zoology) Any sea urchin or sea dollar of the class Echinoidea. === Adjective === echinoid Resembling a sea urchin.