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Definition of filament noun from the Oxford Advanced Learner's Dictionary

filament

noun
 
/ˈfɪləmənt/
 
/ˈfɪləmənt/
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  1. a thin wire in a light bulb that produces light when electricity is passed through itTopics Engineeringc2
  2. (specialist) a long thin piece of something that looks like a thread
    • glass/metal filaments
    • Under the glass cover was a mass of thin wire filaments.
    • The male fish develops extended filaments on the dorsal fin.
    • Underground fungi filaments provide nutrients and water to the trees.
    Topics Biologyc2
  3. Word Originlate 16th cent.: from French, or from modern Latin filamentum, from late Latin filare ‘to spin’, from Latin filum ‘thread’.
See filament in the Oxford Advanced American DictionarySee filament in the Oxford Learner's Dictionary of Academic English
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