follow Dictionary.com

Know these essential literary terms?

polycrystal

/ˈpɒlɪˌkrɪstəl/
noun
1.
an object composed of randomly oriented crystals, formed by rapid solidification
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
Cite This Source
Encyclopedia Article for polycrystal

any solid object composed of randomly oriented crystalline regions, called crystallites, especially as distinguished from a single crystal (q.v.). Polycrystalline materials result when a substance solidifies rapidly; crystallization commences at many sites (see nucleation), and the structurally ordered regions growing from each site intersect each other. The random arrangement of the boundaries between individual crystallites in a polycrystal causes them to scatter a beam of light instead of reflecting or refracting it uniformly, so that even colourless polycrystals are opaque. Other mechanical, electrical, or magnetic properties of single crystals are similarly altered by the absence of long-range order in polycrystals.

Learn more about polycrystal with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Word Value for polycrystal

21
0
Scrabble Words With Friends