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We found 24 dictionaries with English definitions that include the word placoderm:
Click on the first link on a line below to go directly to a page where "placoderm" is defined.

General (20 matching dictionaries)

1. placoderm: Merriam-Webster.com [home, info]
2. placoderm: Oxford Dictionaries [home, info]
3. placoderm: American Heritage Dictionary of the English Language [home, info]
4. placoderm: Collins English Dictionary [home, info]
5. placoderm: Vocabulary.com [home, info]
6. placoderm: Wordnik [home, info]
7. placoderm: Wiktionary [home, info]
8. placoderm: Infoplease Dictionary [home, info]
9. placoderm: Dictionary.com [home, info]
10. placoderm: UltraLingua English Dictionary [home, info]
11. Placoderm: Wikipedia, the Free Encyclopedia [home, info]
12. Placoderm: Online Plain Text English Dictionary [home, info]
13. placoderm: Webster's Revised Unabridged, 1913 Edition [home, info]
14. placoderm: Rhymezone [home, info]
15. Placoderm: AllWords.com Multi-Lingual Dictionary [home, info]
16. placoderm: Free Dictionary [home, info]
17. placoderm: Mnemonic Dictionary [home, info]
18. placoderm: WordNet 1.7 Vocabulary Helper [home, info]
19. placoderm: LookWAYup Translating Dictionary/Thesaurus [home, info]
20. placoderm: Dictionary/thesaurus [home, info]

Computing (1 matching dictionary)

21. placoderm: Encyclopedia [home, info]

Medicine (1 matching dictionary)

22. placoderm: online medical dictionary [home, info]

Science (2 matching dictionaries)

23. placoderm: Evolution Glossary [home, info]
24. placoderm: Anthropology dictionary [home, info]

(Note: See placoderms for more definitions.)

Quick definitions from WordNet (placoderm) ▸ noun:  fishlike vertebrate with bony plates on head and upper body; dominant in seas and rivers during the Devonian; considered the earliest vertebrate with jaws ▸ Also see placoderms ▸ Words similar to placoderm ▸ Usage examples for placoderm ▸ Popular adjectives describing placoderm ▸ Words that often appear near placoderm ▸ Rhymes of placoderm ▸ Invented words related to placoderm