Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. The state or condition of being fit; suitability or appropriateness.
- n. Good health or physical condition, especially as the result of exercise and proper nutrition.
- n. Biology The extent to which an organism is adapted to or able to produce offspring in a particular environment.
Century Dictionary and Cyclopedia
- n. The state or quality of being fit or suitable; suitableness; adaptedness or adaptability of one thing to another; hence, congruity; befittingness; meetness: as, the fitness of things; the fitness of a thing for the purpose intended.
- n. The state of being fitted or qualified; requisite capacity; qualification: as, he lacks fitness for the place.
Wiktionary
- n. The condition of being fit, suitable or appropriate
- n. the cultivation of an attractive and healthy physique
- n. the ability to perform a function
GNU Webster's 1913
- n. The state or quality of being fit
WordNet 3.0
- n. the quality of being qualified
- n. the quality of being suitable
- n. good physical condition; being in shape or in condition
- n. fitness to traverse the seas
Examples
“Protein fitness is defined by the properties of organic chemicals, which may indeed be (as you contend) the evidence of telic forethought, but that is entirely outside the scope of the subject weasel is addressing.”
“The doctrine of evolution uses the term fitness in a hard and stern sense.”
“There are a whole host of other errors in this i09 article, and I'll just pick this one: It does not use the term fitness correctly.”
“The biological concept of "fitness" is what engineers often call an "error function.”
“This trip was shrouded in secrecy – players included – before it took place and it has become a monumental source of embarrassment since it was revealed that Jimmy Anderson damaged a rib in a boxing bout during the trip and that his fitness is in doubt ahead of the first Test in Brisbane.”
The Guardian: Pre-Ashes boot camps: team-building fun or a waste of time?
“Ed Baig has trying out "brain fitness" software and Web-based offerings that aim to bolster cognitive skills through games and mental ...”
Technology Product News: Read reviews and shop for gadgets - USATODAY.com
“Playing brain fitness games CogniFit, InSight, Lumosity”
Technology Product News: Read reviews and shop for gadgets - USATODAY.com
“I've been trying out "brain fitness" software and Web-based offerings that aim to bolster cognitive skills through games and mental exercises: The CogniFit Personal Coach promises to "slow down cognitive decline.”
“Lumosity suggested a brain fitness program for me consisting of 40 sessions of five games each.”
Lists
These user-created lists contain the word ‘fitness’.
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Double Letter words
Here is a list of Double Letter Words! Everyone is welcome to add some more words if needed!
bubbles, gallop, wheel, follow, grasshopper, bunny, rabbit, summer, groovy, puppy, fitness, greetings and 65 more...

brtom "Knowing the perfect fitness and equanimity of things, while they discuss I am silent, and go bathe and admire myself." Whitman, Song of Myself, 3 Jan 3, 2008