[ in-fyoo-zhuhn ]
See synonyms for infusion on
  1. the act or process of infusing.

  2. something that is infused.

  1. a liquid extract, as tea, prepared by steeping or soaking.

  2. Pharmacology.

    • the steeping or soaking of a crude drug in water.

    • the liquid so prepared.

  3. Medicine/Medical.

    • the introduction of a saline or other solution into a vein.

    • the solution used.

Origin of infusion

1400–50; late Middle English <Latin infūsiōn- (stem of infūsiō). See infuse, -ion

Other words from infusion

  • re·in·fu·sion, noun

Words Nearby infusion Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use infusion in a sentence

British Dictionary definitions for infusion


/ (ɪnˈfjuːʒən) /

  1. the act of infusing

  2. something infused

  1. an extract obtained by soaking

  2. med introduction of a liquid, such as a saline solution, into a vein or the subcutaneous tissues of the body

Derived forms of infusion

  • infusive (ɪnˈfjuːsɪv), adjective

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