specialist
/ˈspeʃ·ə·lɪst/ n [C]Definition
› someone who limits his or her studying or work to a particular area of knowledge, and who is an expert in that area: She’s a specialist in financial management. › A specialist is also a doctor who works in and knows a lot about one particular area of medicine: an eye/heart/joint specialist
(Definition of specialist n from the Cambridge Academic Content Dictionary
© Cambridge University Press)
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