rickettsiaceae rickettsia • rickettsial · · · Info · Definitions · Characters · · rickettsiaceae · · Text Latin · · Script 14 · · Length 5 · · Syllables Definitions · · · (noun) microorganism resembling bacteria inhabiting arthropod tissues but capable of causing disease in vertebrates. Synonyms: Rickettsiaceae, family Rickettsiaceae. · · Noun Definition 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 k latin small letter k U+006B r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074