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WordReference Random House Learner's Dictionary of American English © 2024fil•a•ment /ˈfɪləmənt/USA pronunciation n. [countable]- a very fine thread or threadlike structure; a fiber or fibril:filaments of gold.
- Electricity(in a light bulb) the threadlike conductor that is heated and glows due to the passage of current.
fil•a•men•tous /ˌfɪləˈmɛntəs/USA pronunciation adj. WordReference Random House Unabridged Dictionary of American English © 2024fil•a•ment (fil′ə mənt),USA pronunciation n. - a very fine thread or threadlike structure;
a fiber or fibril:filaments of gold. - a single fibril of natural or synthetic textile fiber, of indefinite length, sometimes several miles long.
- Fungi, Microbiologya long slender cell or series of attached cells, as in some algae and fungi.
- Botanythe stalklike portion of a stamen, supporting the anther. See diag. under flower.
- Birds[Ornith.]the barb of a down feather.
- Electricity(in a light bulb or other incandescent lamp) the threadlike conductor, often of tungsten, in the bulb that is heated to incandescence by the passage of current.
- Electronicsthe heating element (sometimes also acting as a cathode) of a vacuum tube, resembling the filament in an incandescent bulb.
- Astronomya solar prominence, as viewed within the sun's limb.
- Neo-Latin fīlāmentum, equivalent. to Late Latin fīlā(re) to wind thread, spin (see file1) + Latin -mentum -ment
- 1585–95
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