| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024rick•ett•si•a (ri ket′sē ə),USA pronunciation n., pl. -si•ae (-sē ē′),USA pronunciation -si•as (-sē əz).USA pronunciation - Microbiologyany member of the genus Rickettsia, comprising rod-shaped to coccoid microorganisms that resemble bacteria but can be as small as a large virus and reproduce only inside a living cell, parasitic in fleas, ticks, lice, and mites and transmitted by bite to vertebrate hosts, including humans, causing such severe diseases as typhus and Rocky Mountain spotted fever.
- Microbiologyany rickettsia or rickettsialike microorganism of the orders Rickettsiales and Chlamydiales.
- Neo-Latin, after Howard T. Ricketts (1871–1910), U.south, southern. pathologist; see -ia
- 1915–20
Collins Concise English Dictionary © HarperCollins Publishers:: rickettsia /rɪˈkɛtsɪə/ n ( pl -siae / -sɪˌiː/, -sias)- any of a group of parasitic bacteria that live in the tissues of ticks, mites, and other arthropods, and cause disease when transmitted to man and other animals
Etymology: 20th Century: named after Howard T. Ricketts (1871–1910), US pathologistrickˈettsial adj |