Bacillus

Definition of bacillus:

part of speech: noun

An elongated rodlike bacterium; a single- celled fungus.

part of speech: noun

A species of rod- like microscopic organisms belonging to the genus Bacterium. Certain diseases are believed to be caused by these bodies being introduced into the system.

part of speech: noun

Any of a genus, or kind, of rodshaped vegetable organisms, visible only under the microscope.

Usage examples for bacillus:

• It must not be supposed that the tubercle bacillus is necessarily transmitted directly through the air from the lungs of the sick to be implanted in the lungs of the healthy. "A Practical Physiology", Albert F. Blaisdell.