Word Study
echinoderm family |
echinoderm genus |
echinodermal |
echinodermata |
echinodermatous |
echinoid
| echinoidea
| echinops
| echinozoa
| echinulate
| echinus
echinoid
CIDE DICTIONARY
echinoid, a. [Echinus + -oid.].
Of or pertaining to the Echinoidea. [1913 Webster]
For further exploring for "echinoid" in Webster Dictionary Online