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
Princess	PRIN-ses, PRINT-səs, prin-SES	English (Modern)
Pavlos	-	Greek
Lon	LAHN	English
Adriana	ahd-RYAH-nah (Italian, Spanish, Polish), ayd-ree-AN-ə (English)	Italian, Spanish, Portuguese, Romanian, Polish, Czech, Slovak, English
Ernestine	['ə:nəsti:n]
Kristeen	kris-TEEN	English (Rare)