单词 | bacteria |
释义 | Word Frequency bacteria(bækˈtɪərɪə) plural nounWord forms: singular -rium (-rɪəm) a very large group of microorganisms comprising one of the three domains of living organisms. They are prokaryotic, unicellular, and either free-living in soil or water or parasites of plants or animals See also prokaryote Derived forms bacterial (bacˈterial) adjective bacterially (bacˈterially) adverb Word origin C19: plural of New Latin bacterium, from Greek baktērion, literally: a little stick, from baktron rod, staff |
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