rhizobium

noun
rhi·​zo·​bi·​um | \ rī-ˈzō-bē-əm How to pronounce rhizobium (audio) \
plural rhizobia\ rī-​ˈzō-​bē-​ə How to pronounce rhizobium (audio) \

Definition of rhizobium

: 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

Other Words from rhizobium

rhizobial \ rī-​ˈzō-​bē-​əl How to pronounce rhizobium (audio) \ adjective

First Known Use of rhizobium

1890, in the meaning defined above

History and Etymology for rhizobium

New Latin, from rhiz- + Greek bios life — more at quick entry 1

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Time Traveler for rhizobium

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The first known use of rhizobium was in 1890

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Dictionary Entries Near rhizobium

Rhizobiaceae

rhizobium

rhizocaline

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Cite this Entry

“Rhizobium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rhizobium. Accessed 28 Sep. 2021.

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More Definitions for rhizobium

rhizobium

noun
rhi·​zo·​bi·​um | \ rī-ˈzō-bē-əm How to pronounce rhizobium (audio) \

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
2 plural rhizobia\ -​bē-​ə How to pronounce rhizobium (audio) \ : any bacterium of the genus Rhizobium

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