We found 17 dictionaries that define the word conjoined twin:

General (12 matching dictionaries)

1. conjoined twin: Merriam-Webster
2. conjoined twin: Oxford Learner's Dictionaries
3. conjoined twin: Vocabulary.com
4. conjoined twin: Wiktionary
5. conjoined twin: Dictionary.com
6. Conjoined twin: Wikipedia, the Free Encyclopedia
7. Conjoined twin: Rhymezone
8. conjoined twin: FreeDictionary.org
9. conjoined twin: Mnemonic Dictionary
10. conjoined twin: TheFreeDictionary.com

Computing (1 matching dictionary)

11. conjoined twin: Encyclopedia

Medicine (3 matching dictionaries)

12. Conjoined twin: MedTerms.com Medical Dictionary
13. conjoined twin: Medical dictionary
14. Conjoined twin: Drug Medical Dictionary

Slang (1 matching dictionary)

15. conjoined twin: Urban Dictionary

(Note: See conjoined_twins as well.)

Definitions from Wiktionary (conjoined twin) ▸ noun:  One of the two identical twins who are born attached together in utero. Similar: Siamese twin, identical, twin, time twin, cotwin, couple, twinsies, twinner, twin-ship, twin ship, more... Opposite: fraternal twin, unidentical twin, dizygotic twin ▸ Words similar to conjoined twin ▸ Usage examples for conjoined twin ▸ Idioms related to conjoined twin ▸ Wikipedia articles (New!) ▸ Words that often appear near conjoined twin ▸ Rhymes of conjoined twin ▸ Invented words related to conjoined twin