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, 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

Derived Forms

• reinfusion
  noun
• infusive
  adjective

Inflected Forms

Nouns

• infusions
  plural

Etymology

Origin of infusion

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

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

That shift would help rural patients gain access to advanced treatments through mail-order pharmacies, rather than traveling hours to the nearest infusion center.

From The Wall Street Journal ● Jul. 22, 2026

An infusion of new funds approved by Congress this year and a waiver of eligibility procedures have staved off a potential crisis that would have left 4,200 back on the street.

From Los Angeles Times ● Jul. 9, 2026

As part of the same funding package, GlobalFoundries secured a $375 million infusion to establish a business unit focused on domestic manufacturing for utility-scale quantum computing.

From Barron's ● Jun. 25, 2026

And for his own community of Mexican Americans, he said the matches had brought a much-needed infusion of joy.

From Los Angeles Times ● Jun. 17, 2026

Candles float in three small pools: the first is full of rose petals, the second is thick with an infusion of aloe, and the last one simmers with salt, sulfur, and steam.

From "The Belles" by Dhonielle Clayton

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

From Los Angeles Times ● May 11, 2026

The company’s foundry business remains unprofitable, but Intel is winning back confidence following capital infusions from industry partners and federal government support.

From Barron's ● May 7, 2026

It is an ecosystem of lab work, imaging, consultations and infusions.

From MarketWatch ● May 1, 2026

Ball envisions a future where doctors use targeted injections or infusions to affect specific brain cells without the widespread side effects and risk of addiction associated with opioids.

From Science Daily ● Apr. 27, 2026

But they gave me a comfortable place to sleep at one end of the apothecary, the room where the doctor prepared his medicines and infusions.

From "The Shakespeare Stealer" by Gary L. Blackwood