Meaning of “bacteria” in the English Dictionary

british dictionary

"bacteria" in British English

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uk /bækˈtɪə.ri.ə/ us /bækˈtɪr.i.ə/

plural of bacterium


  • a colony of bacteria
  • There are many different types of bacteria.
  • Some bacteria can only live in anaerobic conditions.
  • Food must be heated to a high temperature to kill harmful bacteria.
  • Many sorts of bacteria are resistant to penicillin.

(Definition of “bacteria” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"bacteria" in American English

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bacteriaplural noun

us /bækˈtɪər·i·ə/ singular bacterium /bækˈtɪr·i·əm/

biology very small organisms that are found everywhere and are the cause of many diseases

(Definition of “bacteria” from the Cambridge Academic Content Dictionary © Cambridge University Press)

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