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

“That’s why we need to be really cautious in giving someone a diagnosis,” says Devi, who wrote a recent opinion piece published in the Annals of Internal Medicine outlining concerns about the different diagnostic criteria.

From The Wall Street Journal • Feb. 10, 2026

One longer walk a day is better for your heart than lots of short strolls, especially if you don't exercise much, according to new research published in Annals of Internal Medicine.

From BBC • Oct. 27, 2025

The study is published in the Journal of Internal Medicine.

From Science Daily • Nov. 28, 2024

Both are members of the U-M Institute for Healthcare Policy and Innovation, and faculty members in the Division of Gastroenterology at the U-M Medical School's Department of Internal Medicine.

From Science Daily • Apr. 11, 2024

It seemed, therefore, incongruous to have the whole of Internal Medicine or the whole of Private Law condensed into one section.

From International Congress of Arts and Science, Volume I Philosophy and Metaphysics by Various