WordWeb Online

1. A solution obtained by steeping or soaking a substance (usually in water)
   - extract
    
2. The process of extracting certain active properties (as a drug from a plant) by steeping or soaking (usually in water)
    
3. (medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force)
    
4. 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"

Derived forms: infusions

Type of: change of state, extraction, instillation, instillment, instilment [Brit, Cdn], solution

Encyclopedia: Infusion