internal medicine

American  

noun

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

---

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

---

internal medicine Scientific  

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

---

Etymology

Origin of internal medicine

First recorded in 1900–05

Example Sentences

Scientists tracked them during the 9.5-year study period and published their results in October at annals.org, the website of the Annals of Internal Medicine.

From The Wall Street Journal • Nov. 13, 2025

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

Their results are published in the Journal of General Internal Medicine.

From Science Daily • Apr. 3, 2024

The peer-reviewed study, published in the Annals of Internal Medicine, was conducted by a team at the UW, led by Dr. Joel Kaufman, a university physician and professor of environmental and occupational health sciences.

From Seattle Times • Nov. 30, 2023

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