Coxiella

[kŏk′sē-ĕlə]
n.
  1. A genus of filterable parasitic bacteria containing small rod-shaped or coccoid, gram-negative cells; it includes the species that causes Q fever in humans.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.