n. An antibiotic, 5-(3,4,5-trimethoxybenzyl)pyrimidine-2,4-diamine, used against, among other infections, those of the urinary tract.
Word Usage
"Ask your doctor for a diarrhea-fighting prescription antibiotic, such as sulfamethoxazole and trimethoprim (Bactrim DS) or ciprofloxacin (Cipro), to treat severe cases accompanied by fever."