filament

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filament /ˈfɪləmənt/ noun
plural filaments
filament
/ˈfɪləmənt/
noun
plural filaments
Learner's definition of FILAMENT
[count]
: a thin thread or hair
: a thin wire in a light bulb that glows when electricity passes through it

— filamentous

/ˌfɪləˈmɛntəs/ adjective, technical