| streptomyces | (n) aerobic bacteria (some of which produce the antibiotic streptomycin) |
| streptomyces erythreus | (n) source of the antibiotic erythromycin |
| streptomyces griseus | (n) source of the antibiotic streptomycin |
| streptomycetaceae | (n) higher bacteria typically aerobic soil saprophytes, Syn. family Streptomycetaceae |