rickettsia.
Any of a group of gram-negative bacteria, of the genus Rickettsia, carried as parasites by ticks, fleas and lice, that cause typhus and other diseases.
Meaning & usage
Any of a group of gram-negative bacteria, of the genus Rickettsia, carried as parasites by ticks, fleas and lice, that cause typhus and other diseases.
Any bacterium of the order Rickettsiales.
Where this word comes from
Borrowed from translingual Rickettsia (genus name), from Howard Taylor Ricketts, equivalent to Ricketts + -ia.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.