[ih-kahy-noid, ek-uh-noid] /ɪˈkaɪ nɔɪd, ˈɛk əˌnɔɪd/
belonging or pertaining to the class Echinoidea, comprising mainly sea urchins and sand dollars.
any echinoderm of the Echinoidea.
any of the echinoderms constituting the class Echinoidea, typically having a rigid ovoid body. The class includes the sea urchins and sand dollars
of or belonging to this class
[ih-kin-yuh-lit, -leyt, ih-kahyn-] /ɪˈkɪn yə lɪt, -ˌleɪt, ɪˈkaɪn-/ adjective 1. (of a plant or animal) having a covering of prickles or small spines.
[ih-kahy-nuh s] /ɪˈkaɪ nəs/ noun, plural echini [ih-kahy-nahy] /ɪˈkaɪ naɪ/ (Show IPA) 1. any sea urchin of the genus Echinus. 2. Architecture. /ɪˈkaɪnəs/ noun (pl) -ni (-naɪ) 1. (architect) an ovolo moulding between the shaft and the abacus of a Doric column 2. any of the sea urchins of the genus Echinus, such as E. […]
/ˈɛkɪəm/ noun 1. any plant of the Eurasian and African genus Echium with bell-shaped flowers sometimes borne on single-sided spikes in a wide variety of colours; E. vulgare is viper’s bugloss: family Boraginaceae
[ek-ee-yoo r-id] /ˌɛk iˈyʊər ɪd/ noun 1. any of various unsegmented marine worms of the phylum Echiura, comprising the spoonworms.