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

Panh’s brother was severely injured in 2019 in an auto-pedestrian hit-and-run accident, having to undergo brutal spine infusions. —Benjamin Adams, Forbes.com, 19 May 2025

The new concoction was to be delivered via twice-monthly infusions — though each treatment would take longer, pushing the medicine into Elissa’s body for eight or nine hours at a time. —Kristen Jordan Shamus, USA Today, 19 May 2025

Yoo’s Jujube Ginseng Negroni uses soju as a base for a jujube infusion, which is then mixed with jujube tea and ginseng tea powder. —Heather Riske, Better Homes & Gardens, 18 May 2025

Klimas and her team will divide patients into two evenly split groups to receive infusions of either a placebo or sipavibart. —Cindy Krischer Goodman, Sun Sentinel, 16 May 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

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