Etymology

filamentary

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Today it means: Of, pertaining to, containing or resembling a filament or filaments. Full definition →

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

  1. Proto-Indo-European*gʷʰiH-(s-)lo-
  2. Proto-Italic*fī(s)lom
  3. Latinfīlum
  4. Late Latinfīlō
  5. Medieval Latinfīlāmentum
  6. Englishfilament
  7. English todayfilamentary

From filament + -ary.

Etymology from Wiktionary, CC BY-SA 4.0.