- An echinoderm of this course Echinoidea, which include the sand dollars and ocean urchins.
- Any sea urchin or sea buck associated with class Echinoidea
- In zoology, among Echinoidea.
- Of or pertaining to the Echinoidea.
- getting the form or appearance of a sea-urchin: in entomology, put on specific insect-eggs which are shaped like an echinus, and covered with crowded deep pits.
- related to the Echinoidea.
Sentence for "echinoid"
- An unidentified holothurian is common on…
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