Meaning & use
fitness
The condition of being physically healthy and strong, especially through regular exercise.
See it in a sentence
She joined a gym to improve her overall fitness before the marathon.
Good fitness reduces the risk of many chronic diseases later in life.
A note on using this word
In evolutionary biology, fitness has a specialized meaning: how well an organism's traits help it survive and pass on its genes.
Words with a similar meaning
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Another way to use it
2. noun
In evolutionary biology, the ability of an organism to survive and reproduce successfully in its environment.
Traits that increase an animal's fitness are more likely to be passed to its offspring.
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