A species of aerobic, Gram-negative, diplococci shaped bacteria assigned to the phylum Proteobacteria. This species is catalase and oxidase positive, non-hemolytic, produces a yellowish pigment, reduces both nitrate and nitrite, synthesizes polysaccharides, and produces acid from glucose, maltose, fructose, and sucrose, but not mannose or lactose. N. mucosa is commensal in the human nasopharynx and is rarely pathogenic.

A species of gram-negative, aerobic BACTERIA, found in the human NASOPHARYNX and in the normal flora of the respiratory tissues in DOLPHINS. It is occasionally pathogenic for humans and pathogenic for MICE. (Bergey's Manual of Systemic Bacteriology, 1st edition, p295)

Any bacterial organism that can be assigned to the species Neisseria mucosa.