We found 37 dictionaries that define the word tetra:

General (25 matching dictionaries)

1. tetra: Longman Dictionary of Contemporary English
2. tetra, tetra-: Merriam-Webster
3. tetra, tetra-: Oxford Learner's Dictionaries
4. tetra, tetra-: American Heritage Dictionary of the English Language
5. tetra, tetra-: Collins English Dictionary
6. tetra: Vocabulary.com
7. Tetra, tetra: Wordnik
8. tetra-: Wiktionary
9. tetra, tetra-: Webster's New World College Dictionary, 4th Ed.
10. tetra, tetra (tetr-): The Wordsmyth English Dictionary-Thesaurus
11. tetra: Infoplease Dictionary
12. tetra, tetra-: Dictionary.com
13. tetra-: Online Etymology Dictionary
14. TETRA, Tetra-, Tetra (The Legend of Zelda), Tetra (album), Tetra (company), Tetra (disambiguation), Tetra (monkey), Tetra (unit), Tetra: Wikipedia, the Free Encyclopedia
15. Tetra-: Online Plain Text English Dictionary
16. tetra-: Webster's Revised Unabridged, 1913 Edition
17. tetra: Rhymezone
18. Tetra-: AllWords.com Multi-Lingual Dictionary
19. tetra, tetra-: MyWord.info
20. TETRA: Stammtisch Beau Fleuve Acronyms
21. tetra, tetra-: FreeDictionary.org
22. tetra: Mnemonic Dictionary
23. tetra, tetra-: TheFreeDictionary.com
24. tetra: Wiktionary
25. tetra-: Wordnik

Art (1 matching dictionary)

26. tetra-: A Cross Reference of Latin and Greek Elements

Computing (1 matching dictionary)

27. tetra: Encyclopedia

Medicine (2 matching dictionaries)

28. online medical dictionary (No longer online)
29. tetra, tetra-: Medical dictionary

Miscellaneous (2 matching dictionaries)

30. TETRA: Acronym Finder
31. AbbreviationZ (No longer online)

Science (3 matching dictionaries)

32. tetra: Dictionary of Botanical Epithets
33. Botanical Terms (No longer online)
34. Glossary of Roots of Botanical Names (No longer online)

Slang (2 matching dictionaries)

35. tetra: Green’s Dictionary of Slang
36. Tetra: Urban Dictionary

Tech (1 matching dictionary)

37. RF Terms Glossary (No longer online)

(Note: See tetras as well.)

Definitions from Wiktionary (tetra) ▸ noun:  Any of numerous species of small freshwater fish of the South American family Characidae and West African family Alestidae, popular in home aquariums. Similar: cardinal tetra, characin, darter, cardinal, tetraodon, triacanthid, tigerfish, triacanthodid, tetraodontiform, ratfish, more... Opposite: penta, hexa, hepta, octa Phrases: Tetra Pak, neon tetra, cardinal tetra, tetra amelia, tetra ethyl lead, more... Adjectives: cardinal, greek, lead, lemon, mexican, black, tri, positive, octa, nulli, apo ▸ Word origin ▸ Words similar to tetra ▸ Usage examples for tetra ▸ Idioms related to tetra ▸ Wikipedia articles (New!) ▸ Popular adjectives describing tetra ▸ Words that often appear near tetra ▸ Rhymes of tetra ▸ Invented words related to tetra