(n): a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution
(n): the process of extracting certain active properties (as a drug from a plant) by steeping or soaking (usually in water)
(n): the process of obtaining something from a mixture or compound by chemical or physical or mechanical means
(n): (medicine) the passive introduction of a substance (a fluid or drug or electrolyte) into a vein or between tissues (as by gravitational force)
(n): the introduction of a liquid (by pouring or injection) drop by drop
(n): the act of infusing or introducing a certain modifying element or quality
(n): the act of changing something into something different in essential characteristics
