Infusion is the process of extracting flavors or beneficial properties from a substance, usually by soaking it in a liquid. This technique is commonly used in making beverages like tea, where hot water draws out the flavors from tea leaves. Infusion can also apply to cooking, where ingredients like herbs or spices are steeped in oils or broths to enhance their taste. In the medical field, infusion refers to delivering medication or nutrients directly into a patient's bloodstream through an intravenous (IV) line. This method allows for quick absorption and is often used for patients who cannot take medications orally. Infusion therapy can be crucial for treating various conditions, including cancer and dehydration.