IPA: /ɪnˈfjuːʒən/
KK: /ɪnˈfjuːʒən/
The process of introducing a liquid into the body through a vein, or the liquid that is infused, often for medical treatment.
The doctor recommended an infusion of fluids to help with dehydration.
Infusion is formed from "in-" (meaning into) and "fundere" (meaning to pour). The word describes the act of pouring a substance into another, often to extract flavors or properties.
Think of 'pouring' ('fundere') something 'into' ('in-') another substance, which helps you remember that infusion means to mix or steep something.