bacillus medical definition
noun pl. ba·cil·li - Any of various rod-shaped, usually gram-positive aerobic bacteria of the genus Bacillus that often occur in chains and include Bacillus anthracis, the causative agent of anthrax.
- Any of various bacteria, especially a rod-shaped bacterium.
noun A genus of rod-shaped gram-positive bacteria capable of producing endospores.
Learn more about bacillus