medical specialist me·di·cals·pecialist uncommon noun 1. practices one branch of medicine Synonymsspecialistmedical specialist Related words Word family specializespecialise Broader terms doctor Narrower terms anesthesiologistbaby doctorcardiologistchiropodistdermatologistdiagnosticiandiplomateear doctor WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.