trimethoprim

[ trahy-meth-uh-prim ]
/ traɪˈmɛθ ə prɪm /

noun Pharmacology.

a synthetic crystalline compound, C11H18N4O3, usually combined with a sulfonamide as an antibiotic preparation in the treatment of urinary tract infections and pneumocystis pneumonia.

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Origin of trimethoprim

1960–65; trimetho(xyphenyl) + p(y)rim(idinediamine), components of its chemical name
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for trimethoprim

trimethoprim
[ trī-mĕthə-prĭm ]

n.

An antibiotic usually used to treat urinary tract infections, often in combination with sulfamethoxazole.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.