rickettsia

== English == === Etymology === Borrowed from translingual Rickettsia (genus name), from Howard Taylor Ricketts, equivalent to Ricketts +‎ -ia. === Noun === rickettsia (plural rickettsias or rickettsiae) 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. (informal) Any bacterium of the order Rickettsiales. ==== Usage notes ==== Rickettsia has no connection with rickets, which is a disease caused by vitamin D deficiency. ==== Derived terms ==== ==== Translations ==== === See also === Rickettsia (genus) Rickettsieae (tribe) Rickettsiaceae (family) Rickettsiales (order) === Anagrams === air tickets == Romanian == === Etymology === Borrowed from English riekettsia or French rickettsie. === Noun === rickettsia f (plural rickettsii) rickettsia == Spanish == === Pronunciation === IPA(key): /riˈketsja/ [riˈket̪.sja] Rhymes: -etsja Syllabification: ric‧kett‧sia === Noun === rickettsia f (plural rickettsias) rickettsia === Further reading === “rickettsia”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025 rickettsia on the Spanish Wikipedia.Wikipedia es