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Definition of filament noun from the Oxford Advanced American Dictionary

     

    filament

     noun
    noun
    NAmE//ˈfɪləmənt//
     
     
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  1. 1a thin wire in a light bulb that produces light when electricity is passed through it
  2. 2(technology) a long, thin piece of something that looks like a thread glass/metal filaments The male fish develops extended filaments on the dorsal fin.
See filament in the Oxford Advanced Learner's Dictionary
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