Usually means: Extinct, marine mollusks with shells.
Definitions Related words Mentions History
We found 17 dictionaries that define the word ammonoid:

General (15 matching dictionaries)
  1. ammonoid: Merriam-Webster
  2. ammonoid: Oxford Learner's Dictionaries
  3. ammonoid: American Heritage Dictionary of the English Language
  4. ammonoid: Collins English Dictionary
  5. ammonoid: Vocabulary.com
  6. ammonoid: Wordnik
  7. ammonoid: Wiktionary
  8. ammonoid: Infoplease Dictionary
  9. ammonoid: Dictionary.com
  10. Ammonoid: Wikipedia, the Free Encyclopedia
  11. ammonoid: Rhymezone
  12. ammonoid: FreeDictionary.org
  13. ammonoid: Mnemonic Dictionary
  14. ammonoid: TheFreeDictionary.com
  15. ammonoid: Merriam-Webster

Computing (1 matching dictionary)
  1. ammonoid: Encyclopedia

Science (1 matching dictionary)
  1. ammonoid: Evolution Glossary

(Note: See ammonoids as well.)

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Definitions from Wiktionary (ammonoid)

▸ noun:  An extinct cephalopod of the subclass †Ammonoidea (including ammonites).
▸ adjective:  Characteristic of an ammonite.

Similar:
ammonite, ammonitid, amynodontid, neoammonite, cornu ammonis, anomphalid, anisoceratid, amaltheid, amoebid, amphidontid, more...

Opposite:
nautiloid, non-ammonoid, non-cephalopod

▸ Words similar to ammonoid

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Similar:
ammonite, ammonitid, amynodontid, neoammonite, cornu ammonis, anomphalid, anisoceratid, amaltheid, amoebid, amphidontid, more...

Opposite:
nautiloid, non-ammonoid, non-cephalopod



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