Share this entry
Echinoidea Syllabification: Ech·i·noi·de·a
Pronunciation: /ˌekəˈnoidēə/

Definition of Echinoidea in English:

A class of echinoderms that comprises the sea urchins.
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.


Modern Latin (plural), from echinus.

Definition of Echinoidea in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources