Pronunciation: (in-fyOO'zhun),[key] —n. 1. the act or process of infusing.
2. something that is infused.
3. a liquid extract, as tea, prepared by steeping or soaking.
4. Pharm. a. the steeping or soaking of a crude drug in water.
b. the liquid so prepared.
5. Med. a. the introduction of a saline or other solution into a vein.
b. the solution used.