1
: the quality or state of being fit
2
: the capacity of an organism to survive and transmit its genotype to reproductive offspring as compared to competing organisms
also
: the contribution of an allele or genotype to the gene pool of subsequent generations as compared to that of other alleles or genotypes
Synonyms
Examples of fitness in a Sentence
a gymnastics program promoting fitness and agility in school-aged children
I have to question the fitness of wearing a bright red dress to a funeral.
Recent Examples on the Web
They are designed for each hotel’s own fitness center and onsite equipment.
—
Ramsey Qubein, Forbes, 15 Sep. 2024
Those looking to break a sweat can get in laps at the Olympic-length pool near the lobby, adjacent to a 24-hour fitness center.
—Laura Ratliff, Travel + Leisure, 14 Sep. 2024
However, the foam roller is now becoming more popular in the fitness world for other uses, including toning and strengthening.
—Enrica Petraglia, Vogue, 13 Sep. 2024
Already, Apple devices can detect or track heart and respiratory rates, menstrual cycles, body temperature, perform electrocardiograms to record heart rhythms, monitor sleep cycles and detect falls, not to mention serve as a fitness apps for workouts and activity.
—Alice Park, TIME, 13 Sep. 2024
See all Example Sentences for fitness 
Ramsey Qubein, Forbes, 15 Sep. 2024
Those looking to break a sweat can get in laps at the Olympic-length pool near the lobby, adjacent to a 24-hour fitness center.
—Laura Ratliff, Travel + Leisure, 14 Sep. 2024
However, the foam roller is now becoming more popular in the fitness world for other uses, including toning and strengthening.
—Enrica Petraglia, Vogue, 13 Sep. 2024
Already, Apple devices can detect or track heart and respiratory rates, menstrual cycles, body temperature, perform electrocardiograms to record heart rhythms, monitor sleep cycles and detect falls, not to mention serve as a fitness apps for workouts and activity.
—Alice Park, TIME, 13 Sep. 2024
See all Example Sentences for fitness
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'fitness.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Fitness.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fitness. Accessed 19 Sep. 2024.
Copy CitationMedical Definition
fitness
noun
fit·ness
ˈfit-nəs 
: the capacity of an organism to survive and transmit its genotype to reproductively fertile offspring as compared to competing organisms
also
: the contribution of an allele or genotype to the gene pool of subsequent generations as compared to that of other alleles or genotypes
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