internal medicine

American  

noun

1. the branch of medicine dealing with the diagnosis and nonsurgical treatment of diseases, especially of internal organ systems.

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internal medicine British  

noun

1. the branch of medical science concerned with the diagnosis and nonsurgical treatment of disorders of the internal structures of the body

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internal medicine Scientific  

1. The branch of medicine that deals with the diagnosis and nonsurgical treatment of diseases in adults.

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Etymology

Origin of internal medicine

First recorded in 1900–05

Example Sentences

"Not all fish oil supplements are the same," said Imad Shureiqi, professor of internal medicine at the University of Michigan and a member of Rogel Cancer Center.

From Science Daily • Feb. 13, 2026

Esmaili, an internal medicine doctor, is also in several WhatsApp-based peer groups.

From The Wall Street Journal • Nov. 16, 2025

As a resident physician in internal medicine and medical historian focused on addiction, I believe this data represents a tremendous breakthrough in the field of addiction treatment.

From Salon • Nov. 21, 2024

And in other categories, the school’s ranking has risen since 2020 — for example to seventh from 10th in internal medicine and sixth from 12th in pediatrics.

From Los Angeles Times • May 30, 2024

The first thing the next morning, even before I had breakfast, I was visited by an older doctor who was head of internal medicine at the hospital.

From "Long Walk to Freedom" by Nelson Mandela