Etymology

ferrofluid

F4E1R1R1O1F4L1U1I1D2

Today it means: A fluid, typically containing dispersed, nanoscale magnetic particles, designed to be magnetised such that its flow can be controlled by a magnet Full definition →

English fluid ← Middle English fluid ← Latin fluidus
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The story

  1. Old Latin*fersom
  2. Latinferrum
  3. Englishferro-
  4. Proto-Indo-European*bʰel-
  5. Proto-Indo-European*bʰlewH-
  6. Proto-Indo-European*bʰluH-yé-ti?
  7. Latinfluō
  8. Proto-Indo-European*dʰeh₁-
  9. Latinfluidus
  10. Middle Englishfluid
  11. Englishfluid
  12. English todayferrofluid

From ferro- + fluid.

Etymology from Wiktionary, CC BY-SA 4.0.