follow Dictionary.com

How do you spell Hannukah?

phosphorous

[fos-fer-uh s, fos-fawr-uh s, -fohr-] /ˈfɒs fər əs, fɒsˈfɔr əs, -ˈfoʊr-/
adjective, Chemistry
1.
containing trivalent phosphorus.
Origin
1770-1780
1770-80; phosphor- + -ous
Related forms
nonphosphorous, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for phosphorous
  • It was about a bacteria that use arsenic in place of phosphorous.
  • The alchemists also discovered some elements, such as phosphorous.
  • These smaller organisms are also stimulated by nitrogen and phosphorous nutrients running off the land.
  • Calcium and phosphorous, two other important minerals in the body, are also monitored closely.
British Dictionary definitions for phosphorous

phosphorous

/ˈfɒsfərəs/
adjective
1.
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
Cite This Source
Word Origin and History for phosphorous
adj.

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

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
phosphorous in Medicine

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.
Cite This Source

Word of the Day

Difficulty index for phosphorous

Few English speakers likely know this word

Word Value for phosphorous

21
22
Scrabble Words With Friends