infusion

Infusion has 3 syllables: in · fu · sion.

noun. A solution obtained by steeping or soaking a substance (usually in water).

noun. (medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force).

noun. The act of infusing or introducing a certain modifying element or quality.

noun. The process of extracting certain active properties (as a drug from a plant) by steeping or soaking (usually in water).