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

He had first infusion last year and encourages anyone living with HAE to research about trials.

From BBC ● Aug. 23, 2026

So we were looking forward to seeing sweeping improvements when Walter took control and provided the organization with a much-needed financial infusion.

From Los Angeles Times ● Aug. 12, 2026

Her dad Charlie felt earlier detection could have given her a chance of walking, as he had seen "a big difference" since she had a one-off gene therapy infusion in Bristol.

From BBC ● Aug. 9, 2026

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

He stirred several lumps of sugar into his Gurdyroot infusion and drank some.

From "Harry Potter and the Deathly Hallows" by J.K. Rowling

Because they drained their savings buying and fixing up the house, they needed the cash infusions to fund the flora.

From Los Angeles Times ● Aug. 3, 2026

Here he gives a distinguished performance laced with surprising infusions of wit.

From The Wall Street Journal ● Jun. 1, 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

Alys placed the knife carefully beside the corked containers of herbal infusions.

From "Son" by Lois Lowry