intramuscular

American  

[in-truh-muhs-kyuh-ler] / ˌɪn trəˈmʌs kjə lər /

adjective

1. located or occurring within a muscle.

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intramuscular British  

/ ˌɪntrəˈmʌskjʊlə /

adjective

1. Abbreviation (esp of an injection): IM, i.m. anatomy within a muscle

   an intramuscular injection

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Other Word Forms

• intramuscularly
  adverb

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Etymology

Origin of intramuscular

First recorded in 1870–75; intra- + muscular

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Example Sentences

See Examples For:

intramuscular

In both animal models, the nasal spray vaccine provided stronger protection than the same vaccine delivered by a traditional intramuscular injection.

From Science Daily ● Feb. 4, 2026

Food & Drug Administration can take steps to extend over-the-counter designation to generic intramuscular naloxone — the most common and the cheapest form of this life-saving medication.

From Salon ● Jul. 21, 2023

In research with mice at Yale, Iwasaki has devised a nasal spray that works as a booster to the standard intramuscular shot.

From Scientific American ● May 3, 2022

Food and Drug Administration in December approved an antibody drug from AstraZeneca that is given through intramuscular injection and gives “long-lasting” protection to immunocompromised persons prior to infection.

From Washington Times ● Jan. 12, 2022

In this case the elevation of the intramuscular osmotic pressure produced by the electrical excitation and the muscular contractions was therefore 2.5 atmospheres, or more than 2.6 kilogrammes per square centimetre of surface.

From The Mechanism of Life by Stéphane Leduc

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