sing. bacillus
One of three forms of bacteria, usually rod-shaped.
Bacillus (bə-sĭl'əs)
n.
A genus of rod-shaped gram-positive bacteria capable of producing endospores.
| bacillus (bə-sĭl'əs) Pronunciation Key
Plural bacilli (bə-sĭl'ī') Any of various pathogenic bacteria, especially one that is rod-shaped. |