noun
pentathlon
pen-TATH-lun/penˈtæθlən/
An athletic contest consisting of five events.
Each athlete competes in five events during the pentathlon.

Etymology
“Five” and “contest” name a competition combining five exercises for the same competitors, not a contest between five people. The deeper origin of Greek athlon is uncertain.
In context
well busy day for these athletes in the pentathlon five events total
More examples
- She trains for the pentathlon six days a week.
- His combined score earns him first place in the pentathlon.
- The club hosts two pentathlons each year.
Forms
pentathlon · pentathlons
pentathlete noun — An athlete who competes in pentathlons.
Similar words
- contest
- A broader term, without a fixed number of events.
- competition
- Can describe athletic or nonathletic rivalry, regardless of event count.