Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “IM”


adjective uk   /ˌai ˈem/ us    // specialized
abbreviation for intramuscular: An IM injection is chosen when reasonably rapid systemic uptake of the drug is needed by the body.Substances and structures in the body
(Definition of IM from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of IM?
Add Cambridge dictionaries to your browser to your website

More meanings of “IM”

Definitions of “IM” in other dictionaries

Word of the Day

beer mat

a small piece of cardboard that you put under a glass to protect a table surface in a pub or bar

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More