Standard Lemma guide

filament

noun · 10 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /ˈfɪləmənt/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: F IH1 L AH0 M AH0 N T Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A fine thread or wire.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Such a wire, as can be heated until it glows, in an incandescent light bulb or a thermionic valve.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A massive, thread-like structure, such as those gaseous ones which extend outward from the surface of the sun, or such as those (much larger) ones which form the boundaries between large voids in the universe.

Definition source: English Wiktionary via Wiktextract

Topics: astronomy, natural-sciences, physical-sciences, physics

Examples

  • solar filament
  • galaxy filament
  • the Ursa Major Filament

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

The stalk of a flower stamen, supporting the anther.

Definition source: English Wiktionary via Wiktextract

Topics: biology, botany, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

A continuous object, limited in length only by its spool, and not cut to length.

Definition source: English Wiktionary via Wiktextract

Topics: business, manufacturing, textiles

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

A continuous object, limited in length only by its spool, and not cut to length.

A spool of plastic used as a material for 3D-printed objects.

Definition source: English Wiktionary via Wiktextract

Qualifier: 3D printing

Topics: business, manufacturing, textiles

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

a thin wire (usually tungsten) that is heated white hot by the passage of an electric current

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: wire, conducting wire

8

noun

Meaning 8

a threadlike structure (as a chainlike series of cells)

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: filum

Antonyms: none provided

Broader terms: structure, anatomical structure, complex body part, bodily structure, body structure

Narrower terms: hair, pilus

9

noun

Meaning 9

the stalk of a stamen

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: stalk, stem

10

noun

Meaning 10

a very slender natural or synthetic fiber

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: fibril, strand

Antonyms: none provided

Broader terms: fiber, fibre

Narrower terms: barb, cobweb, gossamer, chromatid, myofibril, myofibrilla, sarcostyle, rhizoid, hypha, paraphysis

History

Etymology

Etymology tree Proto-Indo-European *gwhiH-(s-)lo-der. Proto-Italic *fī(s)lom Latin fīlum Proto-Indo-European *-h2 Proto-Indo-European *-éh2 Proto-Indo-European *-yéti Proto-Indo-European *-eh2yéti Proto-Indo-European *-h2tiinflu. Proto-Italic *-ājō Proto-Italic *-āō Latin -ō Late Latin fīlō Proto-Indo-European *-mn̥ Proto-Indo-European *-mn̥tom Proto-Italic *-mentom Latin -mentum Medieval Latin fīlāmentumbor. English filament Borrowed from Medieval Latin fīlāmentum, from Late Latin fīlō (“to spin, draw out in a long line”), from Latin fīlum (“thread”).

Across languages

Translations

71 source translations are retained for this English entry.

  • Bashkir: сүс (süs) — fine thread or wire
  • Bulgarian: ни́шка (níška) — fine thread or wire
  • Bulgarian: жи́чка (žíčka) — fine thread or wire
  • Chinese Mandarin: 纖維 /纤维 (xiānwéi) — fine thread or wire
  • Czech: nitka — fine thread or wire
  • Czech: drátek — fine thread or wire
  • Danish: tråd — fine thread or wire
  • Danish: fiber — fine thread or wire
  • Finnish: säie — fine thread or wire
  • Finnish: kuitu — fine thread or wire
  • French: filament — fine thread or wire
  • Galician: filamento — fine thread or wire
  • German: Faser — fine thread or wire
  • Hungarian: szál — fine thread or wire
  • Hungarian: rost — fine thread or wire
  • Italian: filamento — fine thread or wire
  • Japanese: 繊維 (sen'i) — fine thread or wire
  • Latin: fibra — fine thread or wire
  • Māori: waea rauangi — fine thread or wire
  • Māori: kakawaea — fine thread or wire
  • Norwegian Bokmål: filament — fine thread or wire
  • Norwegian Nynorsk: filament — fine thread or wire
  • Portuguese: filamento — fine thread or wire
  • Russian: нить (nitʹ) — fine thread or wire
  • Russian: волокно́ (voloknó) — fine thread or wire
  • Russian: волосо́к (volosók) — fine thread or wire
  • Sanskrit: अंशु (aṃśu) — fine thread or wire
  • Spanish: filamento — fine thread or wire
  • Spanish: brenca — fine thread or wire
  • Tagalog: walidwid — fine thread or wire
  • Ottoman Turkish: ایپلك (iplik) — fine thread or wire
  • Bulgarian: жи́чка (žíčka) — wire in an incandescent light bulb
  • Chinese Mandarin: 燈絲 /灯丝 (dēngsī) — wire in an incandescent light bulb
  • Czech: vlákno — wire in an incandescent light bulb
  • Danish: glødetråd — wire in an incandescent light bulb
  • Finnish: hehkulanka — wire in an incandescent light bulb
  • French: filament — wire in an incandescent light bulb
  • Galician: filamento — wire in an incandescent light bulb
  • German: Glühwendel — wire in an incandescent light bulb
  • Hebrew: חוט להט — wire in an incandescent light bulb
  • Hungarian: izzószál — wire in an incandescent light bulb
  • Italian: filamento — wire in an incandescent light bulb
  • Japanese: フィラメント (firamento) — wire in an incandescent light bulb
  • Korean: 필라멘트 (pillamenteu) — wire in an incandescent light bulb
  • Korean: 선조 (seonjo) — wire in an incandescent light bulb
  • Māori: waea rauangi — wire in an incandescent light bulb
  • Māori: kakawaea — wire in an incandescent light bulb
  • Norwegian Bokmål: filament — wire in an incandescent light bulb
  • Norwegian Nynorsk: filament — wire in an incandescent light bulb
  • Polish: żarnik — wire in an incandescent light bulb
  • Portuguese: filamento — wire in an incandescent light bulb
  • Russian: нить нака́ла (nitʹ nakála) — wire in an incandescent light bulb
  • Russian: волосо́к (volosók) — wire in an incandescent light bulb
  • Russian: спира́ль (spirálʹ) — wire in an incandescent light bulb
  • Swedish: glödtråd — wire in an incandescent light bulb
  • Chinese Mandarin: 花絲 /花丝 (huāsī) — stalk of a stamen in a flower
  • Danish: støvtråd — stalk of a stamen in a flower
  • Finnish: palho — stalk of a stamen in a flower
  • Galician: filamento — stalk of a stamen in a flower
  • Hungarian: porzószál — stalk of a stamen in a flower
  • Icelandic: frjóþráður — stalk of a stamen in a flower
  • Japanese: 花糸 (kashi) — stalk of a stamen in a flower
  • Manx: faast — stalk of a stamen in a flower
  • Māori: kaka — stalk of a stamen in a flower
  • Portuguese: filamento — stalk of a stamen in a flower
  • Russian: тычи́ночная нить (tyčínočnaja nitʹ) — stalk of a stamen in a flower
  • Spanish: filamento — stalk of a stamen in a flower
  • Swedish: ståndarsträng — stalk of a stamen in a flower
  • Thai: ก้านชูอับเรณู (gâan-chuu-àp-ree-nuu) — stalk of a stamen in a flower
  • Bulgarian: влакно́ (vlaknó) — continuous object, limited in length only by its spool
  • Russian: волокно́ (voloknó) — continuous object, limited in length only by its spool
Real reading context

filament in complete knowledge articles