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Webster 1913 Edition


Echinoidea


Echˊi-noi′de-a

,
Noun.
pl.
[NL. See
Echinus
, and
-oid
.]
(Zoöl.)
The class Echinodermata which includes the sea urchins. They have a calcareous shell, usually more or less spheroidal or disk-shaped, composed of many united plates, and covered with movable spines. See
Spatangoid
,
Clypeastroid
.
[Written also
Echinidea
, and
Echinoida
.]

Definition 2024


Echinoidea

Echinoidea

Translingual

Proper noun

Echinoidea

  1. A taxonomic class within the phylum Echinodermata – the sea urchins and sand dollars.[1]

Hypernyms

Hyponyms

OR

References

  1. Ruggiero MA, Gordon DP, Orrell TM, Bailly N, Bourgoin T, Brusca RC, et al. (2015) A Higher Level Classification of All Living Organisms. PLoS ONE 10(4): e0119248. doi: 10.1371/journal.pone.0119248. pmid:25923521