What is the meaning of Fitness?

The condition of being fit, suitable or appropriate.

The cultivation of an attractive and/or healthy physique.

An organism's or species' degree of success in finding a mate and producing offspring.

The condition of being attractive, fanciable or beautiful.

fitness (a type of fitness sport)

(physical) fitness

aerobics or similar physical exercises done under the supervision of an instructor at a special club

special club where such exercises are done

fitness (cultivation of an attractive and healthy physique)

fitness (degree of appropriateness of an answer in a genetic algorithm)

fitness

fitness (cultivation of an attractive and healthy physique)

Source: wiktionary.org