Meaning & Definition
noun
The condition of being physically fit and healthy.
Regular exercise contributes to overall fitness and well-being.
The quality of being suitable to fulfill a particular role or task.
The fitness for purpose of the software was thoroughly evaluated before the launch.
The extent to which an organism is adapted to its environment, often measured by reproductive success.
In evolutionary biology, fitness refers to how well a species can survive and reproduce in its environment.
Etymology
Middle English: from fit + -ness.
Common Phrases and Expressions
fitness for duty:
A measure of an individual's physical and mental ability to perform assigned tasks.
fitness routine:
A regular schedule of exercise activities to maintain health.
fitness test:
An assessment designed to evaluate one's physical capabilities.
Slang Meanings
Fit
She works out every day; she's really fit.
Gym rat
He's such a gym rat, always working on his fitness.