chem the process of separating the components of a solution on the basis of their different solubilities, by means of evaporating the solution until the least soluble component crystallizes out
After the tragic Arizona shooting, the word “vitriol” was everywhere in the news. What is its literally dangerous meaning?After Saturday’s shocking attack on Arizona lawmaker Gabrielle Giffords and a crowd of bystanders, an unusual word proliferated through all forms of media. Shortly after the shooting tragedy, Pima County Sheriff Clarence Dupnik cited “vitriolic rhetoric” as a potential source for the violence. This article is not about politics or the relationship of media and violence in American culture. The topic at hand, of course, …
Eye of HorusRead more in this article about some frequently asked questions and fun facts related to our definitions.
- fractional currency,
- fractional distillation,
- fractional orbital bombardment system,
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
A process by which a chemical compound is separated into components by crystallization. In fractional crystallization the compound is mixed with a solvent, heated, and then gradually cooled so that, as each of its constituent components crystallizes, it can be removed in its pure form from the solution.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.