bacterio-, bacteri-, bacter-, -bacteria, -bacterial, -bacterially, -bacterium

A genus of Gram-negative, aerobic, rod-shaped bacteria of the family Rhizobiaceae: Agrobacterium bacteria are typically plant pathogens that form galls or tumors on the roots or stems of plants.

One kind of simple bacteria-like microorganism in the kingdom of Archaea: Judy learned that an archaebacterium was able to produce methane and survive in anaerobic, extraordinarily hot, salty, or even acidic environments.

A form of life that developed apart from bacteria and flue-green algae: In 2004, an archaeobacterium was considered to be a portion or section of the subkingdom of the kingdom Bacteria.

In microbiology, pertaining to bacteria: Dr. Big told Alice that she had a bacterial infection due to microorganisms which were causing her to feel so ill, and that it could be treated

1. A substance in photosensitive bacteria that is related to but different from chlorophyll of higher plants.
2. A pigment found in some bacteria that absorbs light for photosynthesis.

Such pigments are structurally similar to the chlorophylls found in plants.