trimethoprim

trimethoprim

[trahy-meth-uh-prim]
noun Pharmacology.
a synthetic crystalline compound, C 11 H 18 N 4 O 3 , usually combined with a sulfonamide as an antibiotic preparation in the treatment of urinary tract infections and pneumocystis pneumonia.

Origin:
1960–65; trimetho(xyphenyl) + p(y)rim(idinediamine), components of its chemical name

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