cephalosporin: one of several broad spectrum antibiotic substances obtained from fungi and related to penicillin (trade names Mefoxin); addition of side chains has produced semisynthetic antibiotics with greater antibacterial activity
antibiotic: a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections
genus cymbidium: genus of tropical epiphytic or terrestrial Old World orchids; one of the most popular orchid genera