Etymology

trirotor

T1R1I1R1O1T1O1R1

Today it means: Having three rotors; having three main rotors. Full definition →

English rotor ← Latin tri- ← Proto-Italic *tri-
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The story

  1. Proto-Indo-European*tréyes
  2. Proto-Indo-European*tri-
  3. Proto-Italic*tri-
  4. Latintri-
  5. Englishtri-
  6. Englishrotor
  7. English todaytrirotor

From tri- + rotor. Late 19th to early 20th century, originally with reference to pumps.

Etymology from Wiktionary, CC BY-SA 4.0.