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Etymology edit

From the genus name.

Noun edit

rhizobium (plural rhizobia)

  1. (biology) Any of various bacteria, of the genus Rhizobium, that form nodules on the roots of legumes and fix nitrogen.
  2. (biology, by extension) Any diazotrophic bacterium that can fix nitrogen and form root nodules in legumes.

Hypernyms edit

Translations edit