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 new drug zorevunersen is administered into the spine via an infusion and works by managing the underlying cause in most cases - a faulty gene affecting the brain.

From BBC • Mar. 4, 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

This held tea—not true tea, which they’d run out of long ago, but an herbal infusion to help shake off the lull—and biscuits, since Sarai always slept through lunch.

From "Strange the Dreamer" by Laini Taylor