Rickettsiaceae

noun plural
Rick·​ett·​si·​a·​ce·​ae | \ri-ˌket-sē-ˈā-sē-ˌē \

Medical Definition of Rickettsiaceae 

: a family of bacteria of the order Rickettsiales that are typically inhabitants of arthropod tissues, are capable in some cases of causing serious disease when transmitted to vertebrates including humans, and include especially the genus Rickettsia

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