What does "triathlete" mean?

An athlete who competes in the triathlon.

What is a synonym for "triathlete"?

Common synonyms include: ironman.

noun

noun ·Rare ·Advanced level

Noun

1
An athlete who competes in the triathlon.
"This is how Alzheimer's transforms encyclopedians into vegetables, how Parkinson's immobilizes triatheletes."

"Triathlete Julie Moss is a portrait of the power of human spirit and true dedication, even in the face of pain and exhaustion."

From tri- + athlete.