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
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
Vance’s family used her fitness Instagram page to deliver the news of her death.
—
Scott Thompson, Fox News, 6 Mar. 2025
No experience is necessary and all fitness levels are welcome.
—Joe Rassel, Orlando Sentinel, 5 Mar. 2025
For example, a local fitness coach who genuinely loves your yoga gear can have a far greater impact than a celebrity endorsement.
—Sabine Leveiller, Forbes, 4 Mar. 2025
There are some exceptions for being in a remote global location and for some non-physical roles to being subject to the annual fitness certification.
—Brendan Coffey, Sportico.com, 1 Mar. 2025
See All Example Sentences for fitness
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Scott Thompson, Fox News, 6 Mar. 2025
No experience is necessary and all fitness levels are welcome.
—Joe Rassel, Orlando Sentinel, 5 Mar. 2025
For example, a local fitness coach who genuinely loves your yoga gear can have a far greater impact than a celebrity endorsement.
—Sabine Leveiller, Forbes, 4 Mar. 2025
There are some exceptions for being in a remote global location and for some non-physical roles to being subject to the annual fitness certification.
—Brendan Coffey, Sportico.com, 1 Mar. 2025
See All Example Sentences for fitness
Cite this Entry
“Fitness.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fitness. Accessed 15 Mar. 2025.
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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