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
The impact of missing out on Guehi and then losing Leoni was accentuated by Joe Gomez’s fitness issues and Ibrahima Konate’s alarming downturn in form in the first half of the season.
—
James Pearce, New York Times, 28 May 2026
Amenities also include pools, fitness centers and playgrounds, the website shows.
—Joe Marusak
may 27, Charlotte Observer, 27 May 2026
With constant exposure to nutrition and fitness content online, helping adolescents develop media literacy and a balanced relationship with food may be one of the most valuable health lessons adults can provide.
—Leeann Weintraub, Oc Register, 27 May 2026
Verhoeven should have been allowed to get to his corner and at best, there should have been a between-round assessment of his fitness for the final round.
—Brian Mazique, Forbes.com, 27 May 2026
See All Example Sentences for fitness
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James Pearce, New York Times, 28 May 2026
Amenities also include pools, fitness centers and playgrounds, the website shows.
—Joe Marusak
may 27, Charlotte Observer, 27 May 2026
With constant exposure to nutrition and fitness content online, helping adolescents develop media literacy and a balanced relationship with food may be one of the most valuable health lessons adults can provide.
—Leeann Weintraub, Oc Register, 27 May 2026
Verhoeven should have been allowed to get to his corner and at best, there should have been a between-round assessment of his fitness for the final round.
—Brian Mazique, Forbes.com, 27 May 2026
See All Example Sentences for fitness
Cite this Entry
“Fitness.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fitness. Accessed 29 May. 2026.
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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