from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A gram-negative bacillus of the genus Yersinia that causes various animal diseases.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A Gram-negative bacterium, of the genus Yersinia, that is an etiological agent of several diseases in animals and humans. Notably Yersinia pestis, which causes bubonic plague.


From New Latin Yersinia, genus name, after Alexandre Émile Jean Yersin (1863-1943), Swiss-born French bacteriologist.
(American Heritage® Dictionary of the English Language, Fourth Edition)



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