A species of facultatively anaerobic, Gram negative, rod shaped bacteria in the phylum Proteobacteria. This species is motile, non spore forming, produces pyorubin, pyocyanin and fluorescein and has minimal nutrient requirements. P. aeruginosa is an opportunistic pathogen found in soil, water and as a part of skin flora that can cause lethal infections in cystic fibrosis patients, burn victims and immunocompromised individuals.

A species of gram-negative, aerobic, rod-shaped bacteria commonly isolated from clinical specimens (wound, burn, and urinary tract infections). It is also found widely distributed in soil and water. P. aeruginosa is a major agent of nosocomial infection.

Any bacterial organism that can be assigned to the species Pseudomonas aeruginosa.

Species of gram negative, aerobic, rod shaped bacteria commonly isolated from clinical specimens (wound, burn, and urinary tract infections); also found widely distributed in soil and water; a major agent of nosocomial infection.