in·​tra·​mus·​cu·​lar ˌin-trə-ˈmə-skyə-lər How to pronounce intramuscular (audio)
: situated in, occurring in, or administered by entering a muscle
an intramuscular injection
intramuscularly adverb

Examples of intramuscular in a Sentence

Recent Examples on the Web The flu shot is an intramuscular vaccine, which means it's injected directly into a muscle in your arm. Korin Miller, Health, 19 Mar. 2024 Scientists at the University of Texas Medical Branch in Galveston tested the drug, made by Gilead, in primates, starting treatment 24 hours after the animals were given what should have been a lethal dose of Sudan ebolavirus by intramuscular injection. Helen Branswell, STAT, 14 Mar. 2024 There were enough patient deaths during Brazilian butt lift surgeries before 2019 that the Florida Board of Medicine issued an emergency rule prohibiting the injection of fat into the intramuscular or submuscular area of the buttocks. David J. Neal, Miami Herald, 5 Mar. 2024 Though given as an intramuscular injection, this shot is different than a vaccine, which activates the immune system. Mary Kekatos, ABC News, 26 Jan. 2024 Pfizer, in particular, has won admirers in the harm-reduction world for donating millions of doses of intramuscular naloxone. Lev Facher, STAT, 28 Mar. 2023 Biologics are administered via an infusion or intramuscular injection. Lana Barhum, Verywell Health, 15 Jan. 2024 There are straight-up replacement therapies—TRT, as it’s called—that replenish levels of the hormone via creams, gels, pellets, or injections of either the subcutaneous or intramuscular kind. Andrew Zaleski, Men's Health, 20 Feb. 2023 Would nasal spray vaccines be as effective as the intramuscular vaccines currently being used to battle the virus? Quanta Magazine, 21 June 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'intramuscular.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


International Scientific Vocabulary

First Known Use

1874, in the meaning defined above

Time Traveler
The first known use of intramuscular was in 1874

Dictionary Entries Near intramuscular

Cite this Entry

“Intramuscular.” Dictionary, Merriam-Webster, Accessed 13 Apr. 2024.

Kids Definition


in·​tra·​mus·​cu·​lar ˌin-trə-ˈməs-kyə-lər How to pronounce intramuscular (audio)
: located in, occurring in, or injected into a muscle

Medical Definition


in·​tra·​mus·​cu·​lar -ˈməs-kyə-lər How to pronounce intramuscular (audio)
: situated within, occurring within, or administered by entering a muscle
intramuscular fat
an intramuscular injection
intramuscularly adverb

More from Merriam-Webster on intramuscular

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