English Reference
verb · noun

define

v. · n.
US /dɪˈfaɪn/ UK /dɪfˈaɪn/ de·fine UK spelling defines

  1. 01 B1 Intermediate General-service

    v.to give the meaning of a word, phrase, or symbol.

    v.to state the precise meaning of a word, phrase, or sign. Transitive; requires a direct object.

    Simple

    The dictionary helps you define words you have never seen before.

    In context

    The introductory chapter seeks to define the technical terminology used throughout the rest of the textbook to ensure student clarity.

    explainspell out
  2. 02 B2 Upper Intermediate Academic

    v.to describe the most important qualities of a person, thing, or situation.

    v.to describe or identify the essential nature or distinctive properties of something.

    Simple

    Hard work and kindness are the values that define her character.

    In context

    The architect argued that the use of natural light should define the building's interior aesthetic rather than being a secondary consideration.

  3. 03 B2 Upper Intermediate Academic

    v.to show the edges or limits of something very clearly.

    v.to mark out the boundaries or limits of an area, concept, or object with distinctness.

    Simple

    The new fence will clearly define the border between the two gardens.

    In context

    The treaty failed to define the maritime borders accurately, leading to decades of diplomatic tension between the neighbouring states.

    demarcatedelimitoutline
  4. 04 C1 Advanced Technical Computing

    n.a command in computer code that replaces one piece of text with another.

    n.a preprocessor directive or macro in source code that maps an identifier to a specific string or value.

    Simple

    The programmer used a define to set the maximum number of users.

    In context

    By using a global define for the version number, the development team could update the entire software suite from a single header file.

    Usage

    Often pronounced with the stress on the first syllable when used as a noun in technical contexts.

Usage accurately define · broadly define · carefully define


From Middle English definen, from Old French definer, variant of definir, from Latin dēfīniō (“limit, settle, define”), from dē + fīniō (“set a limit, bound, end”).

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

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