noun. Any of various bacteria, especially those of the genus Rhizobium, that carry out nitrogen fixation in the root nodules of leguminous plants and often change markedly in size and shape after they enter the roots.

adjective. Resembling bacteria.

noun. A micro-organism such as a bacterium or yeast.

noun. A bacterium of the species Bacteroides.

noun. A symbiotic form of the nitrogen-fixing bacterium Rhizobia, or the root nodule that it produces.

adjective. Resembling bacteria.

adjective. resembling bacteria

noun. a rodlike bacterium (especially any of the rod-shaped or branched bacteria in the root nodules of nitrogen-fixing plants)

"; Cohn, D.H.: Luciferase genes cloned from the unculturable luminous bacteroid symbiont of the Caribbean flashlight fish, Kryptopha - naron alfredi."

bacteroidal  

bacteria  bacterium