the condition of being physically strong and healthy, esp achieved through regular exercise and eating sensibly
lack of fitness
(used before a noun) relating to, denoting, or associated with health, exercise, etc
open a new fitness complex
(often + for) suitability for a particular task, job, role, or post
Her fitness for office is not in dispute
in evolutionary biology:
an organism's degree of adaptation to its environment, as determined by its genetic make-up and contribution to subsequent generations
an organism's ability to reproduce successfully in its environment