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intramuscular

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

adjective

  1. located or occurring within a muscle.

intramuscular British  
/ ˌɪntrəˈmʌskjʊlə /

adjective

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

    an intramuscular injection
"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • intramuscularly adverb

Etymology

Origin of intramuscular

First recorded in 1870–75; intra- + muscular

Vocabulary lists containing intramuscular

UCPS 6th Grade Roots List #15

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The improvement held true across different delivery methods -- intramuscular, intratracheal, and intravenous -- and worked regardless of the specific nanoparticle design or genetic material being delivered.

From Science Daily • Apr. 20, 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

The available intramuscular vaccines for COVID-19 generally thwart severe disease but haven’t stopped infection and transmission outright.

From Washington Times • Oct. 11, 2022

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

These experiments show clearly that the osmotic intramuscular pressure rises in proportion to the duration of the electrical stimulation.

From The Mechanism of Life by Leduc, Stéphane

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.