phosphorous

[ fos-fer-uh s, fos-fawr-uh s, -fohr- ]
/ ˈfɒs fər əs, fɒsˈfɔr əs, -ˈfoʊr- /
|

adjective Chemistry.

containing trivalent phosphorus.

Nearby words

  1. phosphoritic,
  2. phosphorize,
  3. phosphoro-,
  4. phosphorolysis,
  5. phosphoroscope,
  6. phosphorous acid,
  7. phosphorus,
  8. phosphorus 32,
  9. phosphorus pentoxide,
  10. phosphorus sesquisulfide

Origin of phosphorous

First recorded in 1770–80; phosphor- + -ous

Related formsnon·phos·pho·rous, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for phosphorous


British Dictionary definitions for phosphorous

phosphorous

/ (ˈfɒsfərəs) /

adjective

of or containing phosphorus in the trivalent state
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

Word Origin and History for phosphorous

phosphorous

adj.

1777, "phosphorescent," from phosphorus + -ous. The chemical sense (1794) is immediately from French phosphoreux.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for phosphorous

phosphorous

[ fŏsfər-əs, fŏs-fôrəs ]

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.