Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
No pronunciation record was provided for this word.
noun
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.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
Any bacterium of the order Rickettsiales.
Definition source: English Wiktionary via Wiktextract
Usage: informal
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
any of a group of very small rod-shaped bacteria that live in biting arthropods (as ticks and mites) and cause disease in vertebrate hosts; they cause typhus and other febrile diseases in human beings
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: eubacteria, eubacterium, true bacteria
History
Borrowed from translingual Rickettsia (genus name), from Howard Taylor Ricketts, equivalent to Ricketts + -ia.
Across languages
23 source translations are retained for this English entry.
