| Genus (n.) A class of objects divided into several subordinate species |
| Genus (n.) An assemblage of species, having so many fundamental points of structure in common, that in the judgment of competent scientists, they may receive a common substantive name. A genus is not necessarily the lowest definable group of species, for it may often be divided into several subgenera. In proportion as its definition is exact, it is natural genus |
| Zoological (a.) Of or pertaining to zoology, or the science of animals. |
| form genus an artificial taxonomic category established on the basis of morphological resemblance for organisms of obscure true relationships especially fossil forms |
| Heliobacter / genus Heliobacter a genus of helical or curved or straight aerobic bacteria with rounded ends and multiple flagella, found in the gastric mucosa of primates (including humans) |
| bacteria genus a genus of bacteria |
| Aerobacter / genus Aerobacter aerobic bacteria widely distributed in nature |
| Rhizobium / genus Rhizobium the type genus of Rhizobiaceae, usually occur in the root nodules of legumes, can fix atmospheric oxygen |
| Agrobacterium / genus Agrobacterium small motile bacterial rods that can reduce nitrates and cause galls on plant stems |
| genus Bacillus type genus of the Bacillaceae, includes many saprophytes important in decay of organic matter and a number of parasites |
| genus Clostridium anaerobic or micro-aerophilic rod-shaped or spindle-shaped saprophytes, nearly cosmopolitan in soil, animal intestines, and dung |
| genus Nostoc type genus of the family Nostocaceae: freshwater blue-green algae |
| genus Trichodesmium a genus of blue-green algae |