We found 9 dictionaries that define the word ostracoderms:

General (7 matching dictionaries)

1. ostracoderms: Merriam-Webster
2. ostracoderms: Collins English Dictionary
3. ostracoderms: Vocabulary.com
4. ostracoderms: Wiktionary
5. ostracoderms: Dictionary.com
6. Ostracoderms: Wikipedia, the Free Encyclopedia
7. Ostracoderms: TheFreeDictionary.com

Computing (1 matching dictionary)

8. Ostracoderms: Encyclopedia

Science (1 matching dictionary)

9. Ostracoderms: USGS Paleontology Glossary of Terms

(Note: See ostracoderm as well.)

Definitions from Wiktionary (ostracoderm) ▸ noun:  (zoology) Any of the armored jawless fishes of the Paleozoic. ▸ Also see ostracoderm ▸ Words similar to ostracoderms ▸ Usage examples for ostracoderms ▸ Idioms related to ostracoderms ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ostracoderms ▸ Words that often appear near ostracoderms ▸ Rhymes of ostracoderms ▸ Invented words related to ostracoderms