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.
a long slender cell or series of attached cells, as in some algae and fungi.
Botany. the stalklike portion of a stamen, supporting the anther.
Ornithology. the barb of a down feather.
(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.
Electronics. the heating element (sometimes also acting as a cathode) of a vacuum tube, resembling the filament in an incandescent bulb.
Astronomy. a solar prominence, as viewed within the sun's limb.
- fil·a·ment·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use filament in a sentence
According to the theory behind the Weibel instability, the two sets of plasma break into filaments as they stream by one another, like two hands with fingers interlaced.Giant lasers help re-create supernovas’ explosive, mysterious physics | Emily Conover | November 12, 2020 | Science News
It may be in the halos around galaxies or, as another paper recently suggested, in filaments stretching between galaxies.Meet the disk-shaped halo of hot gas you currently live in | Kate Baggaley | October 21, 2020 | Popular-Science
Each magnificent wing is covered in billions of tiny filaments, each a tenth of the width of a human hair.Imitation Is the Sincerest Form of Environmentalism - Issue 90: Something Green | Anastasia Bendebury & Michael Shilo DeLay | October 7, 2020 | Nautilus
Give Dan Rhodes a small sample of a novel polymer, and he’ll figure out how to extrude it into a filament, and how to fine-tune the process to see whether the material can be made to work in high-speed manufacturing.
The team actually gathered data from the filament back in 2014 during a single eight-hour stretch, but the data sat waiting as the radio astronomy community spent years figuring out how to improve the calibration of LOFAR’s measurements.The Hidden Magnetic Universe Begins to Come Into View | Natalie Wolchover | July 2, 2020 | Quanta Magazine
The library in Williamsburg itself is illuminated with antique filament bulbs and everything inside is of the past or a nod to it.
The B voltage gives the plate a positive charge to attract electrons from the filament.
When you connect the A battery, the filament of the tube is heated to release negatively charged electrons.
Electrons travel through the partial vacuum inside the tube, flowing from the filament to the positively charged plate.
Many tubes also have small structures, known as grids, between the filament and the plate.
In the gill filament the blood comes into contact with the free oxygen of the water bathing the gills.A Civic Biology | George William Hunter
Something has been previously said of the difficulties attending the making of the filament for the incandescent light.Steam Steel and Electricity | James W. Steele
The large hairs have their root, and even part of the filament, enclosed in a small membraneous vessel or capsule.The Book of Curiosities | I. Platts
When a sufficient current was passed through the filament, it glowed with a dazzling lustre.Heroes of the Telegraph | J. Munro
At one side stand the warps, very tall and interesting to see, with their lines of delicate filament and high tiers of bobbins.Making Both Ends Meet | Sue Ainslie Clark and Edith Wyatt
British Dictionary definitions for filament
the thin wire, usually tungsten, inside a light bulb that emits light when heated to incandescence by an electric current
electronics a high-resistance wire or ribbon, forming the cathode in some valves
a single strand of a natural or synthetic fibre; fibril
the stalk of a stamen
any of the long slender chains of cells into which some algae and fungi are divided
ornithol the barb of a down feather
anatomy any slender structure or part, such as the tail of a spermatozoon; filum
a long structure of relatively cool material in the solar corona
a long large-scale cluster of galaxies
- filamentary (ˌfɪləˈmɛntərɪ, -trɪ) or filamentous, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for filament
A fine or slender thread, wire, or fiber.
The part of a stamen that supports the anther of a flower; the stalk of a stamen. See more at flower.
A fine wire that gives off radiation when an electric current is passed through it, usually to provide light, as in an incandescent bulb, or to provide heat, as in a vacuum tube.
A wire that acts as the cathode in some electron tubes when it is heated with an electric current.
Any of the dark, sinuous lines visible through certain filters on the disk of the Sun. Filaments are solar prominences that are viewed against the solar surface rather than being silhouetted along the outer edges of the disk. See more at prominence.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.