internal medicine

noun

: a branch of medicine that deals with the diagnosis and treatment of diseases not requiring surgery

Examples of internal medicine in a Sentence

a doctor who specializes in internal medicine

Word History

First Known Use

1835, in the meaning defined above

Time Traveler
The first known use of internal medicine was in 1835

Rhymes for internal medicine

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Browse Nearby Words

internally fired boiler
internal medicine
internal navigation
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Cite this Entry

“Internal medicine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/internal%20medicine. Accessed 20 Apr. 2025.

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Kids Definition

internal medicine

noun
: a branch of medicine that deals with diseases not requiring surgery

Medical Definition

internal medicine

noun
: a branch of medicine that deals with the diagnosis and treatment of nonsurgical diseases
—abbreviation IM

More from Merriam-Webster on internal medicine

Britannica.com: Encyclopedia article about internal medicine

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