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Webster 1913 Edition

Echinoid

E-chi′noid

,

Adj.

[

Echinus

+

-oid

.]

(Zoöl.)

Of or pertaining to the Echinoidea.

–

Noun.

One of the Echinoidea.

Definition 2024

echinoid

echinoid

English

Noun

echinoid ‎(plural echinoids)

(zoology) Any sea urchin or sea dollar of the class Echinoidea