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
Amenities include a clubhouse with a movie theater; art studio; fitness center and dance room; a game room and card room; salon for hair appointments, manicures, pedicures and massages; a media center and indoor and outdoor lounge areas.
—
Elizabeth Marie Himchak, San Diego Union-Tribune, 5 Aug. 2025
On Saturday, August 2, 2025, at the gorgeous Casa Lago Beverly Hills, producer and actor DeVon Franklin and fitness coach Maria Castillo tied the knot in a beautiful lakeside celebration in front of the Los Angeles skyline.
—Victoria Uwumarogie, Essence, 5 Aug. 2025
Gunna’s announcement came accompanied by a cinematic trailer to a possible album documentary, showcasing the rapper’s fitness journey and a throwback clip of a neophyte Gunna looking to manifest his music goals.
—Michael Saponara, Billboard, 4 Aug. 2025
The gym includes Technogym cardio and strength equipment, Peloton bikes, and a schedule of yoga and group fitness classes held outdoors.
—Lauren Mowery, Forbes.com, 4 Aug. 2025
See All Example Sentences for fitness
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Elizabeth Marie Himchak, San Diego Union-Tribune, 5 Aug. 2025
On Saturday, August 2, 2025, at the gorgeous Casa Lago Beverly Hills, producer and actor DeVon Franklin and fitness coach Maria Castillo tied the knot in a beautiful lakeside celebration in front of the Los Angeles skyline.
—Victoria Uwumarogie, Essence, 5 Aug. 2025
Gunna’s announcement came accompanied by a cinematic trailer to a possible album documentary, showcasing the rapper’s fitness journey and a throwback clip of a neophyte Gunna looking to manifest his music goals.
—Michael Saponara, Billboard, 4 Aug. 2025
The gym includes Technogym cardio and strength equipment, Peloton bikes, and a schedule of yoga and group fitness classes held outdoors.
—Lauren Mowery, Forbes.com, 4 Aug. 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 22 Aug. 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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