Akademik

Exocycloida

noun

flat sea urchins

• Syn: ↑order Exocycloida

• Hypernyms: ↑animal order

• Member Holonyms: ↑Echinoidea, ↑class Echinoidea

• Member Meronyms: ↑sand dollar

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\\ˌek(ˌ)sōˌsīˈklȯidə\ noun plural

Usage: capitalized

Etymology: New Latin, from exo- + cycl- + -oida

: an order of sea urchins comprising forms with the periproct posterior or oral in position and including the heart urchins and sand dollars

Useful english dictionary. 2012.