rhizobium

American  

[rahy-zoh-bee-uhm] / raɪˈzoʊ bi əm /

noun

Bacteriology.

rhizobia plural

1. any of several rod-shaped bacteria of the genus Rhizobium, found as symbiotic nitrogen fixers in nodules on the roots of the bean, clover, etc.

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rhizobium British  

/ raɪˈzəʊbɪəm /

noun

1. any rod-shaped bacterium of the genus Rhizobium , typically occurring in the root nodules of leguminous plants and able to fix atmospheric nitrogen See also nitrogen fixation

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Other Word Forms

Inflected Forms

noun

• rhizobia
  plural

Etymology

Origin of rhizobium

< New Latin (1889), equivalent to rhizo- rhizo- + Greek bí ( os ) life ( see bio-) + Latin -um noun suffix