gastroenterology
noun/ˌɡæstroʊˌɛntəˈrɑlədʒi/
Frequency rank: #18,202 most common English word
Meaning
The branch of medicine concerned with the structure, functions, and diseases of the stomach and intestines.

Example sentence
She decided to specialize in gastroenterology after becoming fascinated by digestive diseases during medical school.
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