Competitors beginning the swimming phase of the Ironman World Championship triathlon in
+ iron . man
Alternative forms Edit
ironman ( plural ironmen or ) ironmans An extremely tough and strong
athlete, especially one who competes in extreme athletic competitions or in a large number of games consecutively.
( Australia ) A form of surf lifesaving competition which combines swimming, board paddling, ski paddling and running.
2011, Katrina Marie Russell, Youth Sport in Australia, page 153,
The catalyst for this rift was the
ironman, a multi-discipline sport combining swimming, running, surf-skis and paddle-boards. Introduced to Australia in 1965 by touring American lifeguards, the
ironman is a test of stamina, strength, and diverse skill.
( Australia , by extension ) The winner of such an event. An extreme form of
triathlon, expecially one organised by the World Triathlon Corporation that comprises a 2.4 mile swim, a 112 mile bike race and a marathon run.
2007 July 21, Aimee Berg, “Far-From-Basic Training for a 135-Mile Footrace”, in New York Times : 
“Every sense of your body is taken over by the climate,” said the New York City native Christopher Bergland, who set a record at triple ironmans (7.2-mile swim, 336-mile bike, 78.6-mile run) but failed to finish one of his three Badwater races.
Usage notes Edit
pertains to the athlete; ironmen pertains to the event. ironmans
Coordinate terms Edit