[ in-fyooz ]
/ ɪnˈfyuz /

verb (used with object), in·fused, in·fus·ing.

to introduce, as if by pouring; cause to penetrate; instill (usually followed by into): The energetic new principal infused new life into the school.
to imbue or inspire (usually followed by with): The new coach infused the team with enthusiasm.
to steep or soak (leaves, bark, roots, etc.) in a liquid so as to extract the soluble properties or ingredients.
Obsolete. to pour in.

verb (used without object), in·fused, in·fus·ing.

to undergo infusion; become infused: Leave the solution to infuse overnight.

Nearby words

  1. infundibulum,
  2. infundibulum of uterine tube,
  3. infuriate,
  4. infuriating,
  5. infuscate,
  6. infuser,
  7. infusible,
  8. infusion,
  9. infusion-aspiration drainage,
  10. infusionism

Origin of infuse

1375–1425; late Middle English < Latin infūsus past participle of infundere to pour into. See in-2, fuse2

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for infuse

British Dictionary definitions for infuse


/ (ɪnˈfjuːz) /


(tr often foll by into) to instil or inculcate
(tr foll by with) to inspire; emotionally charge
to soak or be soaked in order to extract flavour or other properties
rare (foll by into) to pour

Word Origin for infuse

C15: from Latin infundere to pour into

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

Word Origin and History for infuse



early 15c., "to pour in, introduce, soak," from Latin infusus, past participle of infundere "to pour into," from in- "in" (see in- (2)) + fundere "pour, spread" (see found (v.2)). Figurative sense of "instill, inspire" first recorded 1520s (infusion in this sense dates from mid-15c.). Related: Infused; infusing.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for infuse


[ ĭn-fyoōz ]


To steep or soak without boiling in order to extract soluble elements or active principles.
To introduce a solution into the body through a vein for therapeutic purposes.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.