Meaning

• 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."

• The act of steeping or soaking a substance in liquid so as to extract medicinal or herbal qualities.

• The act of installing a quality into a person.

• The act of dipping into a fluid.

• (medicine) The administration of liquid substances directly into a vein for medical purposes; perfusion.