Translate fitness | into French | into German | into Italian | into Spanish Definition of fitness
noun
the condition of being physically fit and healthy:disease and lack of fitness are closely related [as modifier]:a fitness test the quality of being suitable to fulfill a particular role or task:he had a year in which to establish his fitness for the office Biology an organism’s ability to survive and reproduce in a particular environment:if sharp teeth increase fitness, then genes causing teeth to be sharp will increase in frequency
