metaphor noun [C or U]. C2 an âexpression, often âfound in âliterature, that âdescribes a âperson or âobject by referring to something that is âconsidered to have âsimilar âcharacteristics to that âperson or âobject: The âmind is an âocean and the âcity is a âjungle are both metaphors.
A precipitate is an insoluble solid that emerges from a liquid solution. The emergence of the insoluble solid from solution is called precipitation. Often the precipitate emerges as a suspension.recipitates can form when two soluble salts react in solution to form one or more insoluble products-as discussed in the famous example below.
Medical Definition of PRECIPITATION. 1. a: the process of forming a precipitate from a solution b: the process of precipitating or removing solid or liquid particles from a smoke or gas by electrical means. 2.: precipitate.ull Definition of PRECIPITATION. 1. : the quality or state of being precipitate: hastiness. 2. : an act, process, or instance of precipitating; especially: the process of forming a precipitate.