A medical specialist who studies and treats diseases of the stomach and digestive system.
From gastro- (Greek gaster, 'stomach') + -logist (Greek -logos, 'study'). This 19th-century term evolved into the modern term 'gastroenterologist.'
The word 'gastrologist' is mostly historical now, replaced by 'gastroenterologist,' but it shows how medical specialties were first named as sciences before they became clinical practices!
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