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Dictionary · Word part

bacteri/o

A word root that means bacteria.

bak-TEER-ee-oh root

What it means

The root in words about bacteria. Bacteriology is the study of bacteria; bacteriostatic drugs stop bacteria from multiplying, while bactericidal drugs kill them; bacteremiabak-teer-EE-mee-uhThe presence of bacteria in the bloodstream.bacteri/o bacteria-emia in the bloodFull entry is bacteria in the blood.

At a glance

Also writtenbacterio-

Related terms

bacterium

A tiny one-celled living thing, seen only under a microscope, of which some kinds cause disease; the plural is bacteria.

-logy

A word ending that means the study of something.

bacteremia

The presence of bacteria in the bloodstream.

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