infusion

noun

in·​fu·​sion in-ˈfyü-zhən 

1

: the act or process of infusing

an infusion of new ideas

2

: a product obtained by infusing

herbal infusions

3

: the continuous slow introduction of a solution especially into a vein

Examples of infusion in a Sentence

Her ideas have brought a new infusion of vitality to the organization.

a strong infusion of tea

a medicinal drink made by infusion of herbs

Recent Examples on the Web

The new building would feature two additional beds and the capacity to perform additional services such as infusion therapy for cancer, mammography and colonoscopies. — Connor Sheets, Los Angeles Times, 6 Aug. 2026

Their menus include advanced therapies such as vitamin shots, protein and stem cell treatments, and IV infusions designed to support goals like weight loss, stress relief, and gut health. — Patricia Doherty, Travel + Leisure, 5 Aug. 2026

Her days were filled with medical appointments, lab tests, prescriptions, medication changes and infusions. — Sacbee.com, 4 Aug. 2026

Founded by Ricardo and Diana Espinosa March during the pandemic, Bacan is crafted from first-press organic sugarcane and features a refined star anise flavor from slow oil infusion, available in two ABV strengths. — Brian Freedman, Forbes.com, 2 Aug. 2026

Word History

Etymology

Middle English infusion, infusioun "act of pouring in (a medicine), injection, what is poured in, liquid extract," borrowed from Anglo-French & Latin; Anglo-French infusion "liquid extract," borrowed from Latin infūsiōn-, infūsiō "pouring in (of a medicament)," from infud-, variant stem of infundere "to pour in, instill" + -tiōn-, -tiō, suffix of action nouns — more at infuse

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for infusion

• allusion
• collusion
• conclusion
• confusion
• contusion
• delusion
• diffusion
• effusion
• exclusion
• extrusion
• illusion
• inclusion

Kids Definition

infusion

noun

in·​fu·​sion in-ˈfyü-zhən 

1

: the act or process of infusing

an infusion of new ideas

2

: a product obtained by infusing

a strong infusion of tea

Medical Definition

infusion

noun

in·​fusion in-ˈfyü-zhən 

1

a

: the introducing of a solution (as of glucose or salt) especially into a vein

also : the solution so used

b(1)

: the steeping or soaking usually in water of a substance (as a plant drug) in order to extract its soluble constituents or principles compare decoction sense 1

(2)

: the liquid extract obtained by this process

2

: a watery suspension of decaying organic material

culturing soil amebas in lettuce infusion