specialize in

specialize in something

to limit oneself to or be specially trained to practice one particular thing. I specialize in tropical medicine. What do you specialize in?

Name	Pronounced	Usage
Hakim	-	Arabic
Tihomir	-	Croatian, Bulgarian, Serbian, Macedonian
Langdon	LANG-dən	English (Rare)
Andromeda	an-DRAW-mə-də (English)	Greek Mythology
Daumantas	-	Lithuanian
Truus	TRUYS	Dutch