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praseodymium definition

pra·seo·dym·ium (prā′zē ō dim′ē əm, -sē-)

noun

a silvery, malleable chemical element, one of the rare-earth elements, whose salts are generally green in color and are used to color glasses and enamels: symbol, Pr; at. no., 59

Etymology: ModL < praseodymia, a rare earth (< Gr prasios: see prase) + ModL (di)dymium (see didymium): so named (1885) by C. A. von Welsbach (1858-1929), Austrian chemist, from its spectroscopic line and from being split from didymium

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments (1) Add Your Comment

This is an amaazing element. Its atomic number is 59 and it has 82 neutrons. It is used in aircraaft engines, coloring glass, studio lighting, and ceramics. The word originates from the Greek words 'pracios' maening green and 'didymos' meaning twin.

Posted by anonymous 66 days ago.

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