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.
- (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
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.
- 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.