Definition of Echinoidea in English:

Echinoidea

Syllabification: Ech·i·noi·de·a
Pronunciation: /ˌekəˈnoidēə
 
/
Zoology
  • A class of echinoderms that comprises the sea urchins.
    More example sentences
    • Ophiuroidea is grouped with Echinoidea and Holothuroidea based on the closed ambicular grooves.
    • Clark endorsed splitting L. sexiesperforata from Mellita but Mortensen used the name Leodia as a subgenus of Mellita in his extremely influential Monograph of the Echinoidea.
    • BNip3-related sequences were found in all major lineages of Bilateria, from Echinoidea and Ascidiacea to mammals.

Origin

modern Latin (plural), from echinus.

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