Usually means: Sea urchins, spiny marine invertebrates.
Definitions Related words Mentions History
We found 18 dictionaries that define the word echinoid:

General (15 matching dictionaries)
  1. echinoid: Merriam-Webster
  2. echinoid: Oxford Learner's Dictionaries
  3. echinoid: American Heritage Dictionary of the English Language
  4. echinoid: Collins English Dictionary
  5. echinoid: Wordnik
  6. echinoid: Wiktionary
  7. echinoid: Webster's New World College Dictionary, 4th Ed.
  8. echinoid: Infoplease Dictionary
  9. Echinoid, echinoid: Dictionary.com
  10. Echinoid: Wikipedia, the Free Encyclopedia
  11. Echinoid: Online Plain Text English Dictionary
  12. echinoid: Webster's Revised Unabridged, 1913 Edition
  13. Echinoid: AllWords.com Multi-Lingual Dictionary
  14. echinoid: FreeDictionary.org
  15. echinoid: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. echinoid: Encyclopedia

Medicine (2 matching dictionaries)
  1. echinoid: Merriam-Webster Medical Dictionary
  2. online medical dictionary (No longer online)

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Definitions from Wiktionary (echinoid)

▸ noun:  (zoology) Any sea urchin or sea dollar of the class Echinoidea.
▸ adjective:  Resembling a sea urchin.

Similar:
echinid, echinometrid, euechinoid, echinothurioid, echinacean, sea urchin, echinoderm, echinus, heart urchin, echinasterid, more...

Types:
seurchin, sand dollar, heart urchin, slate pencil urchin, green seurchin, flower urchin, collector urchin, more...

Adjectives:
regular, irregular, fossil, typical, bathyal, young, only, common, new, spatangoid, tropical

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Similar:
echinid, echinometrid, euechinoid, echinothurioid, echinacean, sea urchin, echinoderm, echinus, heart urchin, echinasterid, more...

Types:
seurchin, sand dollar, heart urchin, slate pencil urchin, green seurchin, flower urchin, collector urchin, more...

Adjectives:
regular, irregular, fossil, typical, bathyal, young, only, common, new, spatangoid, tropical



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