A physician or scholar who follows or teaches Galen's medical theories and methods.
From 'Galen' plus '-ist' meaning 'one who practices or believes in.' The term was especially common from medieval times through the Renaissance when Galenism was the dominant medical framework.
Medieval galenists had prestigious positions and university chairs—but they couldn't cure a simple infection because their entire worldview was based on balancing imaginary 'humors'!
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