We found 16 dictionaries that define the word tooth decay:

General (11 matching dictionaries)

1. tooth decay: Collins English Dictionary
2. tooth decay: Vocabulary.com
3. tooth decay: Wiktionary
4. tooth decay: Dictionary.com
5. Tooth decay: Wikipedia, the Free Encyclopedia
6. tooth decay: Rhymezone
7. tooth decay: FreeDictionary.org
8. tooth decay: Mnemonic Dictionary
9. tooth decay: TheFreeDictionary.com

Business (1 matching dictionary)

10. tooth decay: Legal dictionary

Computing (1 matching dictionary)

11. tooth decay: Encyclopedia

Medicine (3 matching dictionaries)

12. tooth decay: Parents' Common Sense Encyclopedia
13. tooth decay: Medical dictionary
14. University of Maryland Glossary of Medical Terms (No longer online)

(Note: See tooth_decays as well.)

Definitions from Wiktionary (tooth decay) ▸ noun:  (dentistry) Dental caries. Similar: caries, dental caries, cavity, saprodontia, cariogenesis, pathodontia, odontopathy, cariostasis, dysodontiasis, carinogenesis, more... Opposite: dental health, tooth preservation, oral hygiene, cavity prevention Types: dental caries, cavities, more... Phrases: baby bottle tooth decay, more... ▸ Words similar to tooth decay ▸ Usage examples for tooth decay ▸ Idioms related to tooth decay ▸ Wikipedia articles (New!) ▸ Words that often appear near tooth decay ▸ Rhymes of tooth decay ▸ Invented words related to tooth decay