We found 30 dictionaries that define the word gneiss:

General (23 matching dictionaries)

1. gneiss: Merriam-Webster
2. gneiss: Oxford Learner's Dictionaries
3. gneiss: American Heritage Dictionary of the English Language
4. gneiss: Collins English Dictionary
5. gneiss: Vocabulary.com
6. Gneiss, gneiss: Wordnik
7. gneiss: Cambridge Advanced Learner's Dictionary
8. gneiss: Wiktionary
9. gneiss: Webster's New World College Dictionary, 4th Ed.
10. gneiss: The Wordsmyth English Dictionary-Thesaurus
11. gneiss: Infoplease Dictionary
12. gneiss: Dictionary.com
13. gneiss: Online Etymology Dictionary
14. Gneiss: Wikipedia, the Free Encyclopedia
15. Gneiss: Online Plain Text English Dictionary
16. gneiss: Webster's Revised Unabridged, 1913 Edition
17. gneiss: Rhymezone
18. Gneiss: AllWords.com Multi-Lingual Dictionary
19. gneiss: Webster's 1828 Dictionary
20. gneiss: Robb: German English
21. gneiss: FreeDictionary.org
22. gneiss: Mnemonic Dictionary
23. gneiss: TheFreeDictionary.com

Business (1 matching dictionary)

24. Construction Term Glossary (No longer online)

Computing (1 matching dictionary)

25. gneiss: Encyclopedia

Medicine (1 matching dictionary)

26. online medical dictionary (No longer online)

Science (3 matching dictionaries)

27. Field Trip to Mars (No longer online)
28. Illustrated Glossary of Geologic Terms (No longer online)
29. gneiss: Dictionary of Geology

Slang (1 matching dictionary)

30. gneiss: Urban Dictionary

(Note: See gneissic as well.)

Definitions from Wiktionary (gneiss) ▸ noun:  (geology) A common and widely-distributed metamorphic rock having bands or veins, but not schistose. Similar: gneissgranite, paragneiss, orthogneiss, greisen, green schist, granulite, schist, shist, quartz schist, granitoid, more... Opposite: igneous, sedimentary, metamorphic Types: granite, schist, quartzite, mica schist, amphibolite, more... Phrases: granite gneiss, injection gneiss, slaty gneiss, Acasta Gneiss, more... Adjectives: granitic, biotite, grained, banded, lewisian, grey, hornblendic, gray, garnet, micaceous, feldspathic Colors:     gray,     white,     black,     pink,     beige, more... ▸ Word origin ▸ Words similar to gneiss ▸ Usage examples for gneiss ▸ Idioms related to gneiss ▸ Wikipedia articles (New!) ▸ Popular adjectives describing gneiss ▸ Words that often appear near gneiss ▸ Rhymes of gneiss ▸ Invented words related to gneiss