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

Add 4 ½ ounces of cold water or club soda to a cup for a dry version, or 3 ounces of cold water plus 1 ½ ounces of your spirit of choice for a cocktail. Place 1 sachet in the cup, then rustle or shake the sachet to speed up the flavor infusion. —Karla Walsh, Better Homes & Gardens, 16 Feb. 2025

Some of the cash infusion has already been clawed back in budget negotiations while former President Joe Biden was still in office and more of it could be repurposed or taken away in ongoing talks. —Austin Denean, Baltimore Sun, 10 Feb. 2025

Listen to this article New York City providers who run free after-school for tens of thousands of children are asking Mayor Adams for an infusion of cash — or risk closing programs. —Cayla Bamberger, New York Daily News, 31 Jan. 2025

Daniel Todd, buying director at Mr Porter Favorite collection: Our Legacy’s subtle infusion of British heritage stood out for me this season. —Luisa Zargani, WWD, 21 Jan. 2025

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

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