specialist
US /ˈspeʃ.əl.ɪst/
UK /ˈspeʃ.əl.ɪst/
1.
a person who is an expert in a particular area of work or study
:
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She is a specialist in ancient Roman history.
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You should consult a medical specialist for your condition.
1.
having or involving a special area of knowledge or skill
:
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He offers specialist advice on tax matters.
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The company provides specialist training for its employees.