bacteri-

1.
a combining form meaning “bacteria,” used in the formation of compound words:
bactericide; bacteriuria.
Also, bacter-, bacterio-.
Origin
< Greek baktḗrion little staff; see bacterium
British Dictionary definitions for bacteri-

bacterio-

combining form
1.
indicating bacteria or an action or condition relating to or characteristic of bacteria: bacteriology, bactericide, bacteroid
Word Origin
New Latin, from bacteria