We found 16 dictionaries that define the word identical twins:

General (8 matching dictionaries)

1. identical twins: Merriam-Webster
2. identical twins: Collins English Dictionary
3. identical twins: Vocabulary.com
4. identical twins: Cambridge Advanced Learner's Dictionary
5. identical twins: Wiktionary
6. identical twins: Dictionary.com
7. Identical twins: Wikipedia, the Free Encyclopedia
8. identical twins: TheFreeDictionary.com

Business (1 matching dictionary)

9. identical twins: Legal dictionary

Computing (1 matching dictionary)

10. identical twins: Encyclopedia

Medicine (5 matching dictionaries)

11. Dorland's Illustrated Medical Dictionary (No longer online)
12. Johnson Bwby (No longer online)
13. online medical dictionary (No longer online)
14. identical twins: Medical dictionary
15. Hyperdictionary (No longer online)

Slang (1 matching dictionary)

16. Identical twins: Urban Dictionary

(Note: See identical_twin as well.)

Definitions from Wiktionary (identical twin) ▸ noun:  One of exactly two siblings produced from the splitting of a single zygote. ▸ Also see identical_twin Opposite: fraternal twins, non-identical twins, dizygotic twins ▸ Words similar to identical twins ▸ Usage examples for identical twins ▸ Idioms related to identical twins ▸ Wikipedia articles (New!) ▸ Words that often appear near identical twins ▸ Rhymes of identical twins ▸ Invented words related to identical twins