English Reference
noun

definition

n.
US /ˌdɛfəˈnɪʃən/ UK /dˌɛfɪnˈɪʃən/ def·i·ni·tion UK spelling definition's, definition's

  1. 01 B1 Intermediate

    an explanation of what a word or phrase means, like what you find in a dictionary.

    a formal statement of the meaning of a word, phrase, or symbol. Countable in the sense of a specific entry; uncountable when referring to the general practice.

    Simple

    If you do not know the word, you can look up the definition in your dictionary.

    In context

    The legal team spent hours debating the precise definition of 'negligence' to ensure the contract was airtight.

  2. 02 B2 Upper Intermediate

    how clear and sharp an image or object looks.

    the degree of distinctness or clarity in an image, outline, or sound. Often used in technical contexts regarding screens or photography.

    Simple

    The new television has excellent definition, so the picture looks very real.

    In context

    The high-definition cameras captured the mountain range with such clarity that individual trees were visible from miles away.

    blurrinessfuzziness
  3. 03 C1 Advanced Technical Computing

    a statement that gives a specific value or meaning to a name or function in code.

    a declaration that assigns a value, body, or specific mathematical property to a term or variable.

    Simple

    The program failed because there was an error in the function definition.

    In context

    In this programming language, the definition of a constant must occur before it is referenced in the main execution block.

Usage broad definition · definition include · following definition


From Middle English diffinicioun, from Middle French definition, from Latin dēfīnītiō, from dēfīniō. Equivalent to define + -ition.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin dēfīnītiō
Level B1 · Intermediate
Frequency Common
Updated