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Definition of Rickettsia
1. Noun. Any of a group of very small rod-shaped bacteria that live in biting arthropods (as ticks and mites) and cause disease in vertebrate hosts; they cause typhus and other febrile diseases in human beings.
Generic synonyms: Eubacteria, Eubacterium, True Bacteria
Group relationships: Family Rickettsiaceae, Rickettsiaceae
Derivative terms: Rickettsial
Group relationships: Family Rickettsiaceae, Rickettsiaceae
Derivative terms: Rickettsial
Definition of Rickettsia
1. Noun. Any of a group of gram-negative bacteria, of the genus ''Rickettsia'', carried as parasites by ticks, fleas and lice; they cause typhus and other diseases ¹
¹ Source: wiktionary.com
Definition of Rickettsia
1. [n -SIAE or -SIAS]
Medical Definition of Rickettsia
1. A member of a group of microorganisms that (like viruses) require other living cells for growth but (like bacteria) use oxygen, have metabolic enzymes and cell walls, and are susceptible to antibiotics. Rickettsiae cause a series of diseases (see rickettsial diseases). (12 Dec 1998)
Lexicographical Neighbors of Rickettsia
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