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We found 31 dictionaries with English definitions that include the word tourmaline:
Click on the first link on a line below to go directly to a page where "tourmaline" is defined.

General (26 matching dictionaries)

1. tourmaline: Merriam-Webster.com [home, info]
2. tourmaline: Oxford Dictionaries [home, info]
3. tourmaline: American Heritage Dictionary of the English Language [home, info]
4. tourmaline: Collins English Dictionary [home, info]
5. tourmaline: Vocabulary.com [home, info]
6. Tourmaline, tourmaline: Wordnik [home, info]
7. tourmaline: Wiktionary [home, info]
8. tourmaline: Webster's New World College Dictionary, 4th Ed. [home, info]
9. tourmaline (turmaline): The Wordsmyth English Dictionary-Thesaurus [home, info]
10. tourmaline: Infoplease Dictionary [home, info]
11. tourmaline: Dictionary.com [home, info]
12. tourmaline: UltraLingua English Dictionary [home, info]
13. Tourmaline (activist), Tourmaline (band), Tourmaline (novel), Tourmaline: Wikipedia, the Free Encyclopedia [home, info]
14. Tourmaline: Online Plain Text English Dictionary [home, info]
15. tourmaline: Webster's Revised Unabridged, 1913 Edition [home, info]
16. tourmaline: Rhymezone [home, info]
17. Tourmaline: AllWords.com Multi-Lingual Dictionary [home, info]
18. tourmaline: Hutchinson's Dictionary of Difficult Words [home, info]
19. Tourmaline: 1911 edition of the Encyclopedia Britannica [home, info]
20. tourmaline: Free Dictionary [home, info]
21. tourmaline: Hutchinson Dictionaries [home, info]
22. tourmaline: Luciferous Logolepsy [home, info]
23. tourmaline: Mnemonic Dictionary [home, info]
24. tourmaline: WordNet 1.7 Vocabulary Helper [home, info]
25. tourmaline: LookWAYup Translating Dictionary/Thesaurus [home, info]
26. tourmaline: Dictionary/thesaurus [home, info]

Computing (1 matching dictionary)

27. tourmaline: Encyclopedia [home, info]

Medicine (2 matching dictionaries)

28. tourmaline: online medical dictionary [home, info]
29. tourmaline: Medical dictionary [home, info]

Science (2 matching dictionaries)

30. Tourmaline: Eric Weisstein's World of Chemistry [home, info]
31. TOURMALINE: The Mineral Gallery [home, info]

(Note: See tourmalines for more definitions.)

Quick definitions from WordNet (tourmaline) ▸ noun:  a mineral that is a complex borosilicate and hydroxide of aluminum containing iron and magnesium and calcium and lithium and sodium; it is usually black but occurs in transparent colored forms that are used as gemstones ▸ Also see tourmalines ▸ Words similar to tourmaline ▸ Usage examples for tourmaline ▸ Popular adjectives describing tourmaline ▸ Words that often appear near tourmaline ▸ Rhymes of tourmaline ▸ Invented words related to tourmaline