noun Rho·do·spirillum \¦rō(ˌ) dō+\

Definition of Rhodospirillum

  1. :  a genus of spiral actively motile bacteria (family Athiorhodaceae) that live in mud and stagnant water and are held to fix atmospheric nitrogen

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of rhodospirillum

New Latin, from rhod- + Spirillum

Seen and Heard

What made you want to look up Rhodospirillum? Please tell us where you read or heard it (including the quote, if possible).


to cast off or become cast off

Get Word of the Day daily email!