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
Experience fitness activities, cooking demos, panel discussions, exhibitions, workshops, live music from six stages, and over 200 experiences and food offerings.
—
Luann Gibbs, The Enquirer, 25 Sep. 2024
Fuze House Address: 107 West 20th Street About: Fuze House is an infrared-heated, low-impact fitness studio that recently landed in New York City after gaining a viral following in Miami.
—Emily Burns, WWD, 24 Sep. 2024
In a recent Arizona case, the owner of several fitness centers argued that his duty to pay rent was suspended by reason of impracticability after the governor of Arizona ordered all indoor gyms closed due to COVID-19.
—Christopher A. Combs, The Arizona Republic, 24 Sep. 2024
French Open: Rafael Nadal's Roland Garros evolution 1 of 14
Since the Games, Nadal has pulled out of both the US Open and the Laver Cup due to fitness concerns.
—Ben Church, CNN, 24 Sep. 2024
See all Example Sentences for fitness 
Luann Gibbs, The Enquirer, 25 Sep. 2024
Fuze House Address: 107 West 20th Street About: Fuze House is an infrared-heated, low-impact fitness studio that recently landed in New York City after gaining a viral following in Miami.
—Emily Burns, WWD, 24 Sep. 2024
In a recent Arizona case, the owner of several fitness centers argued that his duty to pay rent was suspended by reason of impracticability after the governor of Arizona ordered all indoor gyms closed due to COVID-19.
—Christopher A. Combs, The Arizona Republic, 24 Sep. 2024
French Open: Rafael Nadal's Roland Garros evolution 1 of 14
Since the Games, Nadal has pulled out of both the US Open and the Laver Cup due to fitness concerns.
—Ben Church, CNN, 24 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.
Dictionary Entries Near fitness
Cite this Entry
“Fitness.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fitness. Accessed 5 Oct. 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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