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An antibiotic drug, C14H18N4O3, used primarily to treat or prevent urinary tract infections, often in combination with sulfamethoxazole.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Pharmacology) an antibiotic often prescribed to be taken with a sulphonamide, esp to treat urinary infections
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
tri•meth•o•prim(traɪˈmɛθ ə prɪm)
a synthetic crystalline compound, C11H18N4O3, usu. combined with a sulfonamide as an antibiotic preparation in the treatment of urinary tract infections and pneumocystis pneumonia.
[1960–65; trimetho(xyphenyl) + p(y)rim(idinediamine), components of its chemical name]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.