antibacterial, antibacterial drug, bactericide - any drug that destroys bacteria or inhibits their growth

antifungal, antifungal agent, antimycotic, antimycotic agent, fungicide - any agent that destroys or prevents the growth of fungi

anthelminthic, anthelmintic, helminthic, vermifuge - a medication capable of causing the evacuation of parasitic intestinal worms

stain - (microscopy) a dye or other coloring material that is used in microscopy to make structures visible