define clostridium botulinum
From Wikipedia, the free encyclopedia. Clostridium botulinum is a Gram-positive, rod-shaped, anaerobic, spore-forming, motile bacterium with the ability to produce the neurotoxin botulinum.. botulinum is a diverse group of bacteria initially grouped together by their ability to produce botulinum toxin and now known as four distinct groups, C. botulinum groups I-IV.