rickettsiales
Definition
- Noun:
- An order of small, pleomorphic, Gram-negative bacteria: Rickettsiales is the scientific name for an order of microorganisms. These bacteria are typically obligate intracellular parasites, meaning they can usually only live and reproduce inside the cells of a host organism. They are often associated with diseases transmitted by arthropods like ticks, lice, and fleas.
Usage Examples
- Noun:
- Rickettsiales includes important pathogens like those causing typhus and Rocky Mountain spotted fever.
- The study focused on the evolutionary history of the order Rickettsiales.
- Scientists classified the newly discovered bacterium within the Rickettsiales.
Advanced Usage
- Taxonomic Context: The term is used primarily in scientific, medical, and microbiological contexts when discussing classification, disease etiology, or bacterial evolution.
- Phylogenetic analysis confirmed its placement in the Rickettsiales.
Variants and Related Words
- Rickettsia (n): A genus within the order Rickettsiales, containing many of the disease-causing species.
- Rickettsia rickettsii is the agent of Rocky Mountain spotted fever.
- Rickettsial (adj): Pertaining to or caused by bacteria of the order Rickettsiales.
- Rickettsial diseases are often spread by insect vectors.
Synonyms
- None in common usage: As a precise taxonomic order name, it has no true synonyms. In general descriptive contexts, one might use "rickettsial bacteria" or "rickettsial organisms," but these are descriptive phrases, not direct synonyms for the taxonomic term .
Related Phrases
- Obligate intracellular parasite: A key characteristic of most members of the Rickettsiales.
- Arthropod-borne disease: A common mode of transmission for pathogens in this order.
Related Idioms
- Not applicable: This is a technical scientific term and is not used in idiomatic expressions.
Noun
-
pleomorphic Gram-negative microorganisms
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