SULFONAMIDES

There are several sulphonamide-based groups of drugs. The original antibacterial sulfonamides (sometimes called simply sulfa drugs) are synthetic antimicrobial agents that contain the sulfonamide group. Some sulfonamides are also devoid of antibacterial activity, e.g., the anticonvulsant sultiame. The sulfonylureas (main article: sulfonylureas) and thiazide diuretics (main article thiazide) are newer drug groups based on the antibacterial sulfonamides.
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Sulfonamides are medicines that prevent the growth of bacteria in the body. [more]Sulfonamides - Community and Resources

Noun
1. antibacterial consisting of any of several synthetic organic compounds capable of inhibiting the growth of bacteria that require PABA
(synonym) sulfa drug, sulfa, sulpha
(hypernym) antibacterial, antibacterial drug, bactericide
(hyponym) sulfacetamide, Sulamyd

n. sulfonamide, sulfa drug