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definition
noun
def·i·ni·tion
ˌde-fə-ˈni-shən 
1
a
: a statement of the meaning of a word or word group or a sign or symbol
dictionary definitions
b
: a statement expressing the essential nature of something
c
: a product of defining
2
: the action or process of stating the meaning of a word or word group
3
a
: the action or the power of describing, explaining, or making definite and clear
the definition of a telescope
her comic genius is beyond definition
b(1)
: clarity of visual presentation : distinctness of outline or detail
improve the definition of an image
(2)
: clarity especially of musical sound in reproduction
c
: sharp demarcation of outlines or limits
a jacket with distinct waist definition
4
: a clear or perfect example of a person or thing
the very definition of a gentleman
5
: an act of determining
specifically
: the formal proclamation of a Roman Catholic dogma
Examples of definition in a Sentence
For the last eight years or so, I've been watching the evolution of bikes made for women. At the beginning of that time, there were a small number of women's bikes available, most offered with low-end, sometimes no-name, spec, as if by definition all women riders were beginners.
—
Christine Bucher, Bicycling, March 2008
Not only is Ellen Byrne a chocolatier, but she takes the definition of artisan to a higher level.
—Amy Johansson, Chocolatier, February/March 2006
One kind of poverty is that of the imagination—the inability to envision a future truly different from the present. Jasmine had long judged people based on whether or not they gave her food and clothing, but, as she watched Carolyn and Gus and other families, she found herself mulling different gauges of worth. She'd been working lately on a definition of love.
—Katherine Boo, New Yorker, 28 Nov. 2005
Ideology thus provides definition of both systemic reality and values: it provides a set of preconceptions of what is and of what ought to be.
—Warren J. Samuels, Modern Economic Thought, (1977) 1993
What is the legal definition of a corporation?
A week of fishing is my definition of a vacation.
a monitor with good definition and vibrant colors
Christine Bucher, Bicycling, March 2008
Not only is Ellen Byrne a chocolatier, but she takes the definition of artisan to a higher level.
—Amy Johansson, Chocolatier, February/March 2006
One kind of poverty is that of the imagination—the inability to envision a future truly different from the present. Jasmine had long judged people based on whether or not they gave her food and clothing, but, as she watched Carolyn and Gus and other families, she found herself mulling different gauges of worth. She'd been working lately on a definition of love.
—Katherine Boo, New Yorker, 28 Nov. 2005
Ideology thus provides definition of both systemic reality and values: it provides a set of preconceptions of what is and of what ought to be.
—Warren J. Samuels, Modern Economic Thought, (1977) 1993
What is the legal definition of a corporation?
A week of fishing is my definition of a vacation.
a monitor with good definition and vibrant colors
Recent Examples on the Web
As the legislation did not put limitations on other variants of THC, the farm bill definition led to an unintended loophole that allowed businesses to create products that meet the legal THC percentage threshold but still create products that include enough THC to get people high.
—Molly Parks, The Washington Examiner, 27 Dec. 2025
The Animal Welfare Act’s definition of animal excludes fish, insects, cephalopods, and most mice and rats.
—The Atlantic Science Desk, The Atlantic, 27 Dec. 2025
While there's no official definition, premium or luxury credit cards often provide extensive perks like airport lounge access, elite status for loyalty programs, numerous statement credits and more.
—Ryley Amond, CNBC, 26 Dec. 2025
The darting adds definition—especially helpful for smaller busts—while slightly wider straps offer a supportive feel.
—Malia Griggs, Glamour, 25 Dec. 2025
See All Example Sentences for definition
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Molly Parks, The Washington Examiner, 27 Dec. 2025
The Animal Welfare Act’s definition of animal excludes fish, insects, cephalopods, and most mice and rats.
—The Atlantic Science Desk, The Atlantic, 27 Dec. 2025
While there's no official definition, premium or luxury credit cards often provide extensive perks like airport lounge access, elite status for loyalty programs, numerous statement credits and more.
—Ryley Amond, CNBC, 26 Dec. 2025
The darting adds definition—especially helpful for smaller busts—while slightly wider straps offer a supportive feel.
—Malia Griggs, Glamour, 25 Dec. 2025
See All Example Sentences for definition
Cite this Entry
“Definition.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/definition. Accessed 28 Dec. 2025.
Copy CitationKids Definition
definition
noun
def·i·ni·tion
ˌdef-ə-ˈnish-ən
1
: an act of determining or settling the limits
2
a
: a statement of the meaning of a word or word group or a sign or symbol
b
: the action or process of defining
3
a
: the action or the power of making definite and clear
b
Medical Definition
definition
noun
def·i·ni·tion
ˌdef-ə-ˈnish-ən
: the action or the power of making definite and clear
the definition of a microscope lens
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