We found 18 dictionaries that define the word specialise:

General (13 matching dictionaries)

1. specialise: Merriam-Webster
2. specialise: Collins English Dictionary
3. specialise: Vocabulary.com
4. specialise: Wordnik
5. specialise: Cambridge Advanced Learner's Dictionary
6. specialise: Wiktionary
7. specialise: Dictionary.com
8. specialise: Rhymezone
9. specialise: FreeDictionary.org
10. specialise: Mnemonic Dictionary
11. specialise: TheFreeDictionary.com

Business (1 matching dictionary)

12. specialise: Legal dictionary

Computing (1 matching dictionary)

13. specialise: Encyclopedia

Medicine (3 matching dictionaries)

14. specialise: Merriam-Webster Medical Dictionary
15. online medical dictionary (No longer online)
16. specialise: Medical dictionary

(Note: See specialises as well.)

Definitions from Wiktionary ( ) ▸ verb:  Non-Oxford British English standard spelling of specialize. [To make distinct or separate from what is common, particularly:] Similar: specialize, specialisation, specialism, speciality, utilise, dabble, customise, utilise, prioritise, more... Opposite: generalize, diversify, broaden, expand, variety Adjectives: many, ouvrier, few, latter, further, over, sub ▸ Words similar to specialise ▸ Usage examples for specialise ▸ Idioms related to specialise ▸ Wikipedia articles (New!) ▸ Words that often appear near specialise ▸ Rhymes of specialise ▸ Invented words related to specialise