a layer of sand or gravel used to expose sewage effluent, in its final stages, to air and the action of microorganisms Compare filter bed (sense 1)
ubiquitous one-celled organisms, spherical, spiral, or rod-shaped and appearing singly or in chains, comprising the Schizomycota, a phylum of the kingdom Monera (in some classification systems the plant class Schizomycetes), various species of which are involved in fermentation, putrefaction, infectious diseases, or nitrogen fixation. Contemporary Examples bacterial pathogens include gonorrhea (yes) which can cause blindness […]
- Bacterial aneurysm
bacterial aneurysm bacterial aneurysm n. An aneurysm caused by the growth of bacteria within the vessel wall, usually following impaction of a septic embolus.
- Bacterial canker
a disease of plants, characterized by cankers and usually by exudation of gum, caused by bacteria, as of the genera Pseudomonas and Corynebacterium.
- Bacterial capsule
bacterial capsule bacterial capsule n. A mucopolysaccharide outer shell enveloping certain bacteria.