What does the Greek word part 'tri' in triathlon mean?

Three.

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Why: Triathlon comes from Greek treis, meaning three, plus athlos, meaning competition.

Huh, didn't know that: Triathlon comes from Greek treis, meaning three, plus athlos, meaning competition.

The dad joke
Tri means three, so a triathlon has tri-umph times three.
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References

Answer: Three. Triathlon comes from Greek treis, meaning three, plus athlos, meaning competition.

  1. Triathlon en.wikipedia.org/wiki/Triathlon
    from τρεῖς (treîs), 'three', and ἆθλος (âthlos), 'competition'
    Checked 2026-11-07.

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