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rhizobium

[rahy-zoh-bee-uh m]
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noun, plural rhi·zo·bi·a [rahy-zoh-bee-uh] /raɪˈzoʊ bi ə/. Bacteriology.
  1. any of several rod-shaped bacteria of the genus Rhizobium, found as symbiotic nitrogen fixers in nodules on the roots of the bean, clover, etc.

Origin of rhizobium

< New Latin (1889), equivalent to rhizo- rhizo- + Greek bí(os) life (see bio-) + Latin -um noun suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for rhizobium

Historical Examples

  • The technical name of these bacteria is Rhizobium leguminosarum.

    The Fundamentals of Bacteriology

    Charles Bradfield Morrey


British Dictionary definitions for rhizobium

rhizobium

noun plural -bia (-bɪə)
  1. any rod-shaped bacterium of the genus Rhizobium, typically occurring in the root nodules of leguminous plants and able to fix atmospheric nitrogenSee also nitrogen fixation

Word Origin

C20: from rhizo- + Greek bios life
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012