SINCE 1828
Rhizobiaceae
plural noun
Rhi·zo·bi·a·ce·ae
| \ (ˌ)rīˌzōbēˈāsēˌē\
Definition of Rhizobiaceae
: a small family of rod-shaped or irregular usually flagellated and gram-negative aerobic bacteria (order Rhizobiales) that includes saprophytes, important nitrogen-fixing symbionts of plants, and some plant pathogens — see agrobacterium , rhizobium
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Merriam-Webster unabridged
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