rhizobium | sense examples, Usage and Definition from wordnet dictionary online

Noun rhizobium has 1 sense

Rhizobium, genus Rhizobium - the type genus of Rhizobiaceae; usually occur in the root nodules of legumes; can fix atmospheric oxygen
--₁ is a kind of bacteria genus
--₁ is a member of Rhizobiaceae, family Rhizobiaceae