Etymology

polymethylene

P3O1L1Y4M3E1T1H4Y4L1E1N1E1

Today it means: Any organic compound having a general formula (CH₂)ₙ Full definition →

English methylene ← French méthylène ← Ancient Greek πολῠ́ς (polŭ́s)
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The story

  1. Proto-Indo-European*pleh₁-
  2. Proto-Indo-European*polh₁ús
  3. Ancient Greekπολῠ́ς (polŭ́s)
  4. Englishpoly-
  5. Frenchméthylène
  6. Englishmethylene
  7. English todaypolymethylene

From poly- + methylene.

Etymology from Wiktionary, CC BY-SA 4.0.