• Define

    Pronunciation

    • IPA: /dɪˈfaɪn/
    • Rhymes: -aɪn

    Origin

    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")

    Full definition of define

    Verb

    1. To determine with precision; to mark out with distinctness; to ascertain or exhibit clearly.
      • Sir Isaac NewtonRings...very distinct and well defined.
      • 2013, Lee S. Langston, The Adaptable Gas Turbine, Turbines have been around for a long time—windmills and water wheels are early examples. The name comes from the Latin turbo, meaning vortex, and thus the defining property of a turbine is that a fluid or gas turns the blades of a rotor, which is attached to a shaft that can perform useful work.
    2. the defining power of an optical instrument
    3. (obsolete) To settle, decide (an argument etc.). 16th-17th c.
    4. To express the essential nature of something.
      • 2013, w, Crinkly Curves, Cantor defined a one-to-one correspondence between the points of the square and the points of the line segment. Every point in the square was associated with a single point in the segment; every point in the segment was matched with a unique point in the square.
    5. I define myself as a techno-anarchist.
    6. To state the meaning of a word, phrase, sign, or symbol.
      The textbook defined speed as velocity divided by time.
    7. To describe, explain, or make definite and clear.
    8. To demark sharply the outlines or limits of an area or concept.
      • 2012, Jan Sapp, Race Finished, Few concepts are as emotionally charged as that of race. The word conjures up a mixture of associations—culture, ethnicity, genetics, subjugation, exclusion and persecution. But is the tragic history of efforts to define groups of people by race really a matter of the misuse of science, the abuse of a valid biological concept?
    9. to define the legal boundaries of a property
    10. (mathematics) To establish the referent of a term or notation.

    Derived terms

    Noun

    define

    (plural defines)
    1. (computing, programming) A kind of macro in source code that replaces one text string with another wherever it occurs.
      • 1996, James Gosling, Henry McGilton, The Java Language EnvironmentFrom the computer programming perspective, Java looks like C and C++ while discarding the overwhelming complexities of those languages, such as typedefs, defines, preprocessor, unions, pointers, and multiple inheritance.
      • 1999, Ian Joyner, Objects unencapsulated: Java, Eiffel, and C++ (page 309)Anyone who has attempted to do OO programming in a conventional language using defines will find out that it is impossible to realize the benefits easily, if at all, without compiler support.

    Anagrams

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