Etymology

heterofilament

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Today it means: A filament composed of two different materials (typically, one in the sheath and the other in the core) Full definition →

English filament ← Medieval Latin fīlāmentum ← Late Latin fīlō
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The story

  1. Proto-Indo-European*sem-
  2. Proto-Indo-European*sḿ̥teros
  3. Proto-Hellenic*hə́teros
  4. Ancient Greekἕτερος (héteros)
  5. Englishhetero-
  6. Proto-Indo-European*gʷʰiH-(s-)lo-
  7. Proto-Italic*fī(s)lom
  8. Latinfīlum
  9. Late Latinfīlō
  10. Medieval Latinfīlāmentum
  11. Englishfilament
  12. English todayheterofilament

From hetero- + filament.

Etymology from Wiktionary, CC BY-SA 4.0.