noun def·i·ni·tion \ˌde-fə-ˈni-shən\

: an explanation of the meaning of a word, phrase, etc. : a statement that defines a word, phrase, etc.

: a statement that describes what something is

: a clear or perfect example of a person or thing

Full Definition of DEFINITION

:  an act of determining; specifically :  the formal proclamation of a Roman Catholic dogma
a :  a statement expressing the essential nature of something
b :  a statement of the meaning of a word or word group or a sign or symbol <dictionary definitions>
c :  a product of defining
:  the action or process of stating the meaning of a word or word group
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>
def·i·ni·tion·al \-ˈni-shə-nəl\ adjective

Examples of DEFINITION

  1. What is the legal definition of a corporation?
  2. A week of fishing is my definition of a vacation.
  3. a monitor with good definition and vibrant colors
  4. 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


Middle English diffinicioun, from Anglo-French, from Latin definition-, definitio, from definire (see define)
First Known Use: 14th century
DEFINITIONAL Defined for Kids


noun def·i·ni·tion \ˌde-fə-ˈni-shən\

Definition of DEFINITION for Kids

:  a statement of the meaning of a word or a word group
:  clearness of outline or detail <You can adjust the screen for better definition.>
Medical Dictionary


noun def·i·ni·tion \ˌdef-ə-ˈnish-ən\

Medical Definition of DEFINITION

:  the action or the power of making definite and clear <the definition of a microscope lens>


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July 02, 2015
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comprehension or the fear of future evil
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