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1.
the fanatical attitude and obsessive-compulsive behaviour in relation to training, gear, watts, supplements and results displayed by Ironman participants and hopefuls; also, describes the individual displaying these traits; related, ironmania, describes the euphoria that results when one ironmanic meets another.
He went on an ironmanic rant after he discovered that shaving his forearms took only 0.8 seconds off his PB for the cycle.

She went ironmanic when her waking heart-rate hit a new low at 42.
by bijouthecat September 19, 2011