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.
Precipitation is the creation of a solid from a solution. When the reaction occurs in a liquid solution, the solid formed is called the 'precipitate'. The chemical that causes the solid to form is called the 'precipitant'. Without sufficient force of gravity (settling) to bring the solid particles together, the precipitate remains in suspension.