infusion

American  

[in-fyoo-zhuhn] / ɪnˈfyu ʒən /

noun

1. the act or process of infusing.

2. something that is infused.

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

4. Pharmacology.

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

   2. the liquid so prepared.

5. Medicine/Medical.

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

   2. the solution used.

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infusion British  

/ ɪnˈfjuːʒən, ɪnˈfjuːsɪv /

noun

1. the act of infusing

2. something infused

3. an extract obtained by soaking

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

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Other Word Forms

• infusive adjective
• reinfusion noun

Etymology

Origin of infusion

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

Example Sentences

A private equity cash infusion could help practices expand, hire, or invest in new equipment.

From Slate • Mar. 17, 2026

PET brain imaging was performed before the start of treatment and again after the final infusion.

From Science Daily • Mar. 8, 2026

The initial infusion would consist of 6.4 billion Cronos valued at $1 billion, or about 15.8 cents per Cronos.

From Los Angeles Times • Mar. 3, 2026

An infusion of millions of dollars through one-time funding from California lawmakers will help narrow the gap for this fiscal year.

From The Wall Street Journal • Mar. 1, 2026

It was innocuous: an infusion of chamomile, nothing more.

From "The Golden Compass" by Philip Pullman