internal medicine
US /ɪnˌtɜːr.nəl ˈmed.ɪ.sɪn/
UK /ɪnˌtɜːr.nəl ˈmed.ɪ.sɪn/
1.
the branch of medicine dealing with the diagnosis and treatment of diseases of the internal organs.
:
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She decided to specialize in internal medicine after medical school.
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The hospital has a strong department of internal medicine.