Definition of Rickettsiales
1. Noun. Pleomorphic Gram-negative microorganisms.
Generic synonyms: Animal Order
Group relationships: Division Eubacteria
Member holonyms: Family Rickettsiaceae, Rickettsiaceae, Chlamydiaceae, Family Chlamydiaceae
Medical Definition of Rickettsiales
1. An order of gram-negative bacteria including many that may cause disease in man or in other vertebrate or invertebrate hosts. (12 Dec 1998)
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Lexicographical Neighbors of Rickettsiales
Literary usage of Rickettsiales
Below you will find example usage of this term as found in modern and/or classical literature:
1. Dis-Integrating Multiculturalismby Mute by Mute (2006)
"... as endosymbionts, and mitochondria developed from proteobacteria (in particular, rickettsiales or close relatives) and chloroplasts from cyanobacteria. ..."