the act of infusing or introducing a certain modifying element or quality; "the team's continued success is attributable to a steady infusion of new talent"
(medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force)
the process of extracting certain active properties (as a drug from a plant) by steeping or soaking (usually in water)
a solution obtained by steeping or soaking a substance (usually in water)
being full of or promoting cheer; having or showing good spirits; "her cheerful nature"; "a cheerful greeting"; "a cheerful room"; "as cheerful as anyone confined to a hospital bed could be"