Which term describes bacteria that are rod-shaped?

The term that describes bacteria that are rod-shaped is bacilli. In microbiology, the classification of bacteria based on their shape is fundamental to understanding their characteristics and behaviors. Bacilli specifically refers to bacteria that have a cylindrical or rod-like structure, which distinguishes them from other bacterial forms.

For context, staphylococci refers to bacteria that are spherical and often appear in clusters or grapelike arrangements. Cocci is the general term for spherical bacteria, which can exist as single cells or in various arrangements, such as pairs or chains. Spirilla describes bacteria that have a spiral or corkscrew shape. Understanding these classifications helps in identifying different types of bacteria and their potential effects in various medical contexts.