See Also: rickettsia(encyclopedia)
rickettsia(dictionary)
Rickettsia(medicine)
rickettsia vaccine(medicine)
rickettsia typhi(medicine)
rickettsia rickettsii(medicine)
rickettsia infections(medicine)
Rickettsia tsutsugamushi(medicine)
Rickettsia sibirica(medicine)
Rickettsia sennetsu(medicine)

rickettsia (iou)



rickettsia noun. , -ias. E20.
[mod. Latin Rickettsia genus name, from H. T. Ricketts (1871-1910), US pathologist + -IA1.]
Medicine & Microbiology. Any of a group of very small rod-shaped or coccoid micro-organisms that are mostly intracellular parasites in vertebrates, including the causative agents of typhus and various other febrile diseases in humans, and are freq. transmitted by mites, ticks, or lice.
rickettsial adjective of, pertaining to, or caused by rickettsiae M20.