Etymology

tromino

T1R1O1M3I1N1O1

Today it means: A polyomino consisting of three squares connected edge-to-edge. Full definition →

English tr(i)- ← 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. Englishtr(i)-
  6. English todaytromino

From tr(i)- + -omino.

Etymology from Wiktionary, CC BY-SA 4.0.