We found 18 dictionaries that define the word crystals:

General (10 matching dictionaries)

1. crystals: Merriam-Webster
2. crystals: Collins English Dictionary
3. crystals: Vocabulary.com
4. Crystal's, Crystals, Crystals, crystal's, crystals: Wordnik
5. crystals: Cambridge Advanced Learner's Dictionary
6. crystals: Wiktionary
7. crystals: Dictionary.com
8. crystals: Cambridge Essential American English Dictionary
9. Crystals (Eskimo Callboy album), Crystals (Sam Rivers album), Crystals (song), Crystals, The Crystals: Wikipedia, the Free Encyclopedia
10. Crystals: TheFreeDictionary.com

Computing (1 matching dictionary)

11. Crystals: Encyclopedia

Medicine (3 matching dictionaries)

12. crystals: Merriam-Webster Medical Dictionary
13. online medical dictionary (No longer online)
14. Crystals: Medical dictionary

Miscellaneous (1 matching dictionary)

15. Crystals: Idioms

Religion (2 matching dictionaries)

16. Religious Tolerance (No longer online)
17. Glossary of spiritual and religious terms (No longer online)

Slang (1 matching dictionary)

18. crystals: Urban Dictionary

(Note: See crystal as well.)

Definitions from Wikipedia (Crystals) ▸ noun:  an album by Sam Rivers released by Impulse! ▸ noun:  "Crystals" is a song written and recorded by Icelandic indie folk/indie pop band Of Monsters and Men. Opposite: amorphous, fluid, liquid, gas, vapor Types: quartz, quartzite, quartz crystal, rock crystal, rock crystal quartz, more... Phrases: Ice crystals, liquid crystals, quartz crystals, ionic crystals, salt crystals, more... Adjectives: single, large, small, liquid, white, prismatic, ionic, colorless, fine, mixed, cubic ▸ Words similar to crystals ▸ Usage examples for crystals ▸ Idioms related to crystals ▸ Wikipedia articles (New!) ▸ Popular adjectives describing crystals ▸ Words that often appear near crystals ▸ Rhymes of crystals ▸ Invented words related to crystals