infusion

plural infusions

1. countableuncountableA 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. countableuncountableThe act of steeping or soaking a substance in liquid so as to extract medicinal or herbal qualities.
3. countableuncountableThe act of installing a quality into a person.
4. countableuncountableA giving of money or other resources, typically a large amount, to an organization.

   [...] but in the verity of extolment / I take him to be a soul of great article and his infusion / of such dearth and rareness as, to make true diction of / him, his semblable in his mirror, and who else would / trace him, his umbrage, nothing more.

   c. 1599–1602 (date written), William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act V, scene i]

   1 more example

   He made a number of other changes at the Transit Police, including revamping audio equipment, moving the force to nine-millimeter semiautomatic weapons, and designing new uniforms. These changes were all part of a $40 million infusion into the Transit Police in 1990 from Governor Mario Cuomo.

   2001, Bernard E. Harcourt, Illusion of Order

5. countableobsoleteuncountableThe act of dipping into a fluid.
6. countableuncountablemedicineThe administration of liquid substances directly into a vein for medical purposes; perfusion.