Definitions

1. noun

A genus of Gram-negative, rod-shaped bacteria that are obligate anaerobes, often found in the human gut.

“Chromatium okeanokala is a species of Chromatium found in oceanic environments.”

2. noun

A genus of Gram-negative, rod-shaped bacteria that are obligate anaerobes.

“The Chromatium species are known for their unique anaerobic properties.”