subspecialist
/ˌsʌbˈspɛʃəlɪst/
noun
- A doctor or other professional who has advanced training and expertise in a specific area within a larger field of specialization.
- If your eye problem is complex, your optometrist may refer you to a subspecialist in retinal diseases.
- The hospital hired a subspecialist in pediatric neurology to treat children with rare brain disorders.
- After medical school, she became a cardiologist and then a subspecialist in heart failure.
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