rhizobium[rī zō′bē əm]
any of a genus (Rhizobium) of rod-shaped, nitrogen-fixing bacteria found in nodules on the roots of certain leguminous plants, as the bean and clover
Origin of rhizobiumModern Latin ; from rhizo- + Classical Greek bios, life: see bio-
Any of various aerobic bacteria of the genus Rhizobium that form root nodules in leguminous plants, such as clover and beans, where they establish a symbiotic relationship in which the bacteria obtain carbon and energy from the plant while supplying the plant with nitrogen by nitrogen fixation.
Origin of rhizobiumNew Latin Rhizobium, genus name : rhizo– + Greek bios, life; see gwei- in Indo-European roots.