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Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To phosphorous
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Phosphorous
is always a great word to know.
So is unstable. Does it mean:
| noting compounds that readily decompose or change into other compounds |
| a substance that, because of the reactions it causes, is used in analysis and synthesis |
Collins
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
phosphorous
1629, "the morning star," from L. Phosphorus "morning star," from Gk. Phosphoros "morning star," lit. "torchbearer," from phos "light" (related to phainein "to show, to bring to light;" see phantasm) + phoros "bearer," from pherein "to carry" (see
EXPAND infer). Meaning "substance or organism that shines of itself" is attested from 1645. As the name of a non-metallic chemical element ["Accidentally obtained from urine in 1669 by Brandt, an alchemist of Hamburg, in the course of his search for the philosophers' stone." OED], it is recorded from 1680.
COLLAPSE
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
phosphorous phos·pho·rous (fŏs'fər-əs, fŏs-fôr'əs)
adj.
Of, relating to, or containing phosphorus, especially with a valence of 3 or a valence lower than that of a comparable phosphoric compound.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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