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

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

From The Wall Street Journal • Nov. 16, 2025

Tyson, a retired internal medicine doctor, came that night to check on the medical compound that was once his family’s home.

From Los Angeles Times • Jan. 8, 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

Marius Myrstad, an internal medicine doctor who studies and treats AF at Baerum Hospital, recently launched the first trial to see whether that’s good advice—especially given that exercise has many benefits, too.

From Science Magazine • May 14, 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