Which term refers to bacteria in medical terminology?

The term that refers to bacteria in medical terminology is "bacteri/o." This root word specifically designates bacteria, which are single-celled microorganisms that can be found in various environments. The use of "bacteri/o" in medical terms often appears in contexts relating to infections or bacterial studies, such as bacteriuria (the presence of bacteria in urine) or bacteriology (the study of bacteria).

In contrast, the other terms provided do not relate to bacteria: "balan/o" pertains to the glans penis or the clitoris; "bar/o" refers to weight or pressure; and "azot/o" is associated with nitrogen, particularly in the context of metabolic processes or waste products in the body. Thus, recognizing "bacteri/o" is essential for the accurate communication of medical concepts regarding bacterial organisms.