mathletePronunciation: /ˈmaθliːt/Definition of mathlete noun informal, chiefly US a person who takes part in a mathematics competition, typically one organized for schoolchildren:as with other mathletes, he spends up to four hours a day on his hobby—or what he simply calls his ‘calculations’Origin: 1930s: blend of mathematics (or math) and athletemathlete in other Oxford dictionaries Definition of mathlete in the US English dictionary