Definition of rhizobium
plural -bia \-bē-ə\
: any of a genus (Rhizobium) of small heterotrophic soil bacteria capable of forming symbiotic nodules on the roots of leguminous plants and of there becoming bacteroids that fix atmospheric nitrogen
Medical Definition of rhizobium
1 capitalized : a genus (family Rhizobiaceae) of small heterotrophic soil bacteria capable of forming symbiotic nodules on the roots of leguminous plants where they fix atmospheric nitrogen
2plural rhizobia \-bē-ə\play : any bacterium of the genus Rhizobium
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Medical Dictionary: Definition of "rhizobium"
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