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

Have things progressed to the point of having regular kombucha or kvass infusions? —Alyssa Brandt, New Yorker, 26 Jan. 2026

If your business needs a large infusion of capital, there are a number of funding sources available to new and established businesses beyond your personal savings. —Rhett Buttle, Forbes.com, 23 Jan. 2026

Dolphins general manager Jon-Eric Sullivan begins his new job with quite a puzzle, managing a roster than needs a significant infusion of talent but also one that must shed a ton of salary to be cap compliant by the start of the new league year by March 11. —Barry Jackson, Miami Herald, 23 Jan. 2026

Sara Johnson, a political science lecturer at Southern Methodist University, said the federal government’s infusion of relief funding toward child care during the pandemic also prompted the attention of parents and voters. —Lina Ruiz, Fort Worth Star-Telegram, 22 Jan. 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