Definition of germ noun from the Oxford Advanced American Dictionary

     

    germ

     noun
    noun
    NAmE//dʒərm//
     
     
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  1. 1[countable, usually plural] a very small living thing that can cause infection and disease Disinfectant kills germs. Dirty hands can be a breeding ground for germs.
  2. 2[singular] germ of something an early stage of the development of something Here was the germ of a brilliant idea. The germ of the town was a single house near the river.
  3. 3 [countable] (biology) the part of a plant or an animal that can develop into a new one see also wheat germ
See the Oxford Advanced Learner's Dictionary entry: germ