infusion

Etymology

From Middle English infusioun, from Old French infusion, from Latin infusio, infusionem (“a pouring into, a wetting, a dyeing, a flow”), from infundo.

noun

1. A product consisting of a liquid which has had other ingredients steeped in it to extract useful qualities.
   An extract of rooibos and chamomile makes a refreshing infusion.
2. The act of steeping or soaking a substance in liquid so as to extract medicinal or herbal qualities.
3. The act of installing a quality into a person.
4. (obsolete) The act of dipping into a fluid.
5. (medicine) The administration of liquid substances directly into a vein for medical purposes; perfusion.