Definition of echinoid in English:

Share this entry


Pronunciation: /ˈɛkɪnɔɪd/


An echinoderm of the class Echinoidea; a sea urchin.
Example sentences
  • Fossils include foraminiferans, brachiopods, echinoids, pelecypods, cephalopods, shark teeth, fish vertebrae, as well as asteroids, gastropods, a pterosaur, a nodosaurid, and decapods.
  • We have interpreted it as a synapomorphy for asteroids, ophiuroids, echinoids, and holothuroids, to the exclusion of the crinoids.
  • Sponges are preyed upon by gastropods, polychaetes, asteroids, echinoids, turtles, and fishes.


Relating to or denoting echinoids.
Example sentences
  • Seven horizons of echinoid aggregations, totaling approximately 3 % of the channel thickness, occur in the black shale.
  • In the echinoid gene order, the tRNA gene cluster follows the putative control region.
  • This implies that the ancestral polarity of the 4.6-kb inversion is the echinoid pattern.

Words that rhyme with echinoid

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.