Medical Dictionary

Rickettsiales

noun pl Rick·ett·si·a·les \ri-ˌket-sē-ˈā-(ˌ)lēz\

Medical Definition of RICKETTSIALES

:  an order of small pleomorphic gram-negative bacteria that are obligate parasites living in vertebrates or in arthropods which often serve as vectors of those parasitic in vertebrates and are placed in the families Anaplasmataceae, Bartonellaceae, and Rickettsiaceae

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May 23, 2015
debouch Hear it
to emerge or cause to emerge
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