filament

noun
fil·​a·​ment | \ ˈfi-lə-mənt How to pronounce filament (audio) \

Definition of filament

: a single thread or a thin flexible threadlike object, process, or appendage (see appendage sense 2): such as
a : a tenuous (see tenuous sense 2) conductor (as of carbon or metal) made incandescent by the passage of an electric current specifically : a cathode (see cathode sense 2) in the form of a metal wire in an electron tube
b(1) : a thin and fine elongated constituent part of a gill (see gill entry 2 sense 1)
(2) : an elongated thin series of cells attached one to another or a very long thin cylindrical single cell (as of some algae, fungi, or bacteria)
c : the anther-bearing stalk of a stamen — see flower illustration

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Other Words from filament

filamentary \ ˌfi-​lə-​ˈmen-​t(ə-​)rē How to pronounce filamentary (audio) \ adjective
filamentous \ ˌfi-​lə-​ˈmen-​təs How to pronounce filamentous (audio) \ adjective

Synonyms for filament

Synonyms

bristle, fiber, hair, thread

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Examples of filament in a Sentence

algae covered with tiny filaments the cable was made up of fine filaments twisted together

Recent Examples on the Web

Clusters, filaments and sheets are the dense regions where galaxies are common. NBC News, "Master plan of the universe revealed in new galaxy maps," 11 Aug. 2019 The dangling Edison bulbs, with their old-fashioned look, glowing filaments and sepia tones, are popular at restaurants and with modern home designers. Los Angeles Times, "UC Santa Barbara sues Walmart, Amazon and others over LED lightbulbs," 30 July 2019 The foundation team was able to track the pair for 25 minutes; what mesmerized was not only the procreative union but the halo of filaments that radiated outward from the female’s body, shimmering with points of light. William J. Broad, New York Times, "The Creepy Anglerfish Comes to Light. (Just Don’t Get Too Close.)," 29 July 2019 The mine was once used to produce an iron manganese tungstate mineral for craft light bulb filament. Dave Quinn, PEOPLE.com, "Instagram Influencers Sick After Swimming in Turquoise Lake That Is Actually a Toxic Dump," 25 July 2019 The dangling Edison bulbs, with their old-fashioned look, glowing filaments, and sepia tones, are popular at American restaurants and with modern home designers. Susan Decker, Fortune, "University Wants a Cut of ‘Edison’ Bulb Sales from Walmart, Target, and Amazon," 30 July 2019 Large gaseous filaments—some measuring about 6,000 miles long—have been drawn out from the famous cyclone, visibly altering its distinctive appearance. Andrew Fazekas, National Geographic, "Solstice arrives, and more top stargazing events in June," 31 May 2019 To spot the hidden filaments, two independent teams of researchers searched for precise distortions in the CMB, the afterglow of the Big Bang. Quanta Magazine, "The Last of the Universe’s Ordinary Matter Has Been Found," 10 Sep. 2018 Raytheon hired dozens of women from local fabric mills and a defunct watch factory, and put them to work weaving the thin copper filaments that formed the ropes. Hiawatha Bray, BostonGlobe.com, "How Massachusetts made the Apollo 11 moon landing possible," 13 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'filament.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of filament

1594, in the meaning defined above

History and Etymology for filament

Middle French, from Medieval Latin filamentum, from Late Latin filare to spin — more at file

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More Definitions for filament

filament

noun

English Language Learners Definition of filament

: a thin thread or hair
: a thin wire in a light bulb that glows when electricity passes through it

filament

noun
fil·​a·​ment | \ ˈfi-lə-mənt How to pronounce filament (audio) \

Kids Definition of filament

1 : a fine thread a filament of silk
2 : a fine wire (as in a light bulb) that is made to glow by the passage of an electric current
3 : the stalk of a plant stamen that bears the anther

filament

noun
fil·​a·​ment | \ ˈfil-ə-mənt How to pronounce filament (audio) \

Medical Definition of filament

: a single thread or a thin flexible threadlike object, process, or appendage especially : an elongated thin series of cells attached one to another or a very long thin cylindrical single cell (as of some algae, fungi, or bacteria)

Other Words from filament

filamentous \ ˌfil-​ə-​ˈment-​əs How to pronounce filamentous (audio) \ adjective

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