sulph-

sulph-

Chiefly British.
variant of sulf-.
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Collins
World English Dictionary
sulph- or (US) sulf-
 
combining form
containing sulphur: sulphate; sulphonic acid
 
usage  The ``ph'' spelling of sulphur and related words is used in British English. In the US the spelling is sulfur. However, the recommended spelling in chemistry is sulfur and this is found in technical writing. Also the sulf- spelling is used in the names of generic drugs
 
sulf- or (US) sulf-
 
combining form
 
usage  The ``ph'' spelling of sulphur and related words is used in British English. In the US the spelling is sulfur. However, the recommended spelling in chemistry is sulfur and this is found in technical writing. Also the sulf- spelling is used in the names of generic drugs

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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American Heritage
Medical Dictionary

sulph- pref.
Variant of sulfo-.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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