Longman Dictionary of Contemporary English homepage

Topic: BIOLOGY

Date: 1800-1900
Language: Modern Latin
Origin: Greek bakterion 'stick, rod'; because of their shape

bacteria

noun
     
bac‧te‧ri‧a singular bacterium [plural]
HBM very small living things, some of which cause illness or disease [↪ virus]
bacterial adjective:
a bacterial infection
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