WordReference Random House Unabridged Dictionary of American English © 2017
de•vel•op•ment  (di veləp mənt),USA pronunciation n. 
  1. the act or process of developing;
    growth;
    progress:child development; economic development.
  2. a significant consequence or event:recent developments in the field of science.
  3. a developed state or form:Drama reached its highest development in the plays of Shakespeare.
  4. Music and Dancethe part of a movement or composition in which a theme or themes are developed.
  5. Businessa large group of private houses or of apartment houses, often of similar design, constructed as a unified community, esp. by a real-estate developer or government organization.
  6. [Chess.]the act or process of developing chess pieces.
  7. Miningthe work of digging openings, as tunnels, raises, and winzes, to give access to new workings, and of erecting necessary structures.
de•vel′op•mental, de•vel′op•menta•ry, adj. 
de•vel′op•mental•ly, adv. 
  • French développement
  • develop + -ment, or 1745–55
    • 1.See corresponding entry in Unabridged expansion, elaboration, growth, evolution;
      unfolding, opening, maturing, maturation.
    • 3.See corresponding entry in Unabridged maturity, ripeness.
    • 5.See corresponding entry in Unabridged community, subdivision.
    • 1.See corresponding entry in Unabridged deterioration, disintegration.

WordReference Random House Learner's Dictionary of American English © 2017
de•vel•op /dɪˈvɛləp/USA pronunciation   v. 
  1. to bring out the possibilities (of);
    come or bring to a more advanced state: [no object]Her reading skills were developing at a rapid pace.[+ object]new plans to develop natural resources.
  2. to (cause to) grow or expand: [no object]Your biceps will develop quickly with that exercise.[+ object]exercises to develop your biceps.
  3. to bring into being or activity;
    produce:[+ object]to develop new techniques.
  4. to (cause to) come into an active state, such as by natural growth or internal processes: [no object]Cancer developed rapidly in the lab mice.[+ object]He had begun to develop an allergy.
  5. to elaborate or expand in detail;
    show in detail:[+ object]began to gather facts to develop his theory.
  6. to build on or improve (a piece of land), esp. so as to make more profitable:[+ object]The builders are developing that part of town.
  7. to be made visible, clear, or easy to see;
    become manifest: [no object]The plot develops slowly.[It + ~ + that clause]It developed that my client had an alibi for that night.
  8. Photographyto immerse (film) in chemicals so that an image becomes visible: [no object]With this instant film, the picture develops in only one minute.[+ object]How long will it take to develop these pictures?
de•vel•op•ment, n. [countable]Developments were proceeding so fast he could no longer keep up.[uncountable]the development of nuclear weapons.
    develop is a verb, development is a noun, developing and developed are adjectives:Learners want to develop good language skills. Their development was very slow. Developing countries are poor; developed countries are rich.

WordReference Random House Unabridged Dictionary of American English © 2017
de•vel•op  (di veləp),USA pronunciation v.t. 
  1. to bring out the capabilities or possibilities of;
    bring to a more advanced or effective state:to develop natural resources; to develop one's musical talent.
  2. to cause to grow or expand:to develop one's muscles.
  3. to elaborate or expand in detail:to develop a theory.
  4. to bring into being or activity;
    generate;
    evolve.
  5. [Drafting.]to transfer the details of (a more or less two-dimensional design, pattern, or the like) from one surface, esp. one that is prismatic or cylindrical, onto another, usually planar, in such a way that the distances between points remain the same.
  6. Developmental Biology[Biol.]
    • to cause to go through the process of natural evolution from a previous and lower stage.
    • to cause to progress from an embryonic to an adult form.
  7. Mathematicsto express in an extended form, as in a series.
  8. Music and Danceto unfold, by various technical means, the inherent possibilities of (a theme).
  9. [Photog.]
    • Photographyto render visible (the latent image on an exposed film or the like).
    • Photographyto treat (an exposed film or the like) with chemicals so as to render the latent image visible.
  10. Chessto bring (a piece) into effective play, esp. during the initial phase of a game when pieces are moved from their original position on the board:He developed his rook by castling.
  11. Miningto prepare (a new mine) for working by digging access openings and building necessary structures.

v.i. 
  1. to grow into a more mature or advanced state;
    advance;
    expand:She is developing into a good reporter.
  2. to come gradually into existence or operation;
    be evolved.
  3. to be disclosed;
    become evident or manifest:The plot of the novel developed slowly.
  4. Photographyto undergo developing, as a photographic film.
  5. Developmental Biology[Biol.]
    • to progress from an embryonic to an adult form.
    • to progress from earlier to later stages of ontogeny or phylogeny.
    • to reach sexual maturity.
de•velop•a•ble adj. 
de•vel′op•a•bili•ty, n. 
  • Middle French développer, Old French desveloper, equivalent. to des- dis-1 + voloper to wrap up; see envelop
  • 1585–95


Collins Concise English Dictionary © HarperCollins Publishers::

development /dɪˈvɛləpmənt/ n
  1. the act or process of growing, progressing, or developing
  2. the product or result of developing
  3. a fact, event, or happening, esp one that changes a situation
  4. an area or tract of land that has been developed

  5. Also called: development section the section of a movement, usually in sonata form, in which the basic musical themes are developed
  6. the process of developing pieces

deˌvelopˈmental adj



'development' also found in these entries:
Collocations: [sexual, physical, fetal, child, adolescent] development, have a development [meeting, day, plan], [personal, self, artistic, musical, sporting] development, more...

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