infusion

American  

[in-fyoo-zhuhn] / ɪnˈfju ʒən /

noun

• infusions
  plural

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 /

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

Derived Forms

• reinfusion
  noun
• infusive
  adjective

Inflected Forms

Nouns

• infusions
  plural

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Etymology

Origin of infusion

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

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Explanation

The most common example of an infusion you are likely to encounter in your daily life is your morning cup of coffee. An infusion is the creation of a new substance by steeping another substance in a liquid, usually water. Infusion is often misused with transfusion, which has a slightly different meaning. A transfusion, as in a blood transfusion, is the simple addition of one substance to another, without the creation of something new. But a drip feed of medicine, for example, is technically an infusion as it alters the state of the blood. See, you’re halfway to becoming a doctor (or at least a linguist) simply by reading this site.

Example Sentences

See Examples For:

infusion infusions

CD&R and McKesson MCK 0.67%increase; green up pointing triangle will acquire Option Care Health, which offers infusion therapy and services to patients at home, for about $5.8 billion including debt.

From The Wall Street Journal ● Oct. 6, 2026

A deal would value the infusion provider at more than $5 billion.

From Barron's ● Oct. 5, 2026

The engineered cells are then returned to the patient in a single infusion.

From Science Daily ● Aug. 30, 2026

The offense desperately needs an infusion of energy down the stretch.

From Los Angeles Times ● Aug. 29, 2026

A hundred of his own Highgarden men had been added to the gold cloaks, yet plainly his lordship meant to resist any balancing infusion of westermen.

From "A Dance with Dragons" by George R. R. Martin

Investment firm CD&R and drug wholesaler McKesson agreed to buy Option Care Health, a provider of infusions to patients at home, for about $5.8 billion including debt.

From The Wall Street Journal ● Oct. 6, 2026

There are coffee drinks, mocktails, optional infusions, DJs on the weekends and a back patio where friends gather to play cards, talk and linger.

From Salon ● Sep. 8, 2026

A few studies suggest that adding vitamin C infusions to chemotherapy may help some patients live a little longer or help with side-effects, but other studies show no clear benefit.

From Science Daily ● Aug. 7, 2026

Australia’s system balances encouraging local stories with large-scale economic infusions through two separate incentive programs.

From Los Angeles Times ● May 11, 2026

Wise men had massaged eucalyptus balm into her temples, steamed her face with herbal infusions.

From "Interpreter of Maladies" by Jhumpa Lahiri

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