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development

American  
[dih-vel-uhp-muhnt] / dɪˈvɛl əp mənt /

noun

developments plural
  1. the act or process of developing; growth; progress.

    child development; economic development.

    Synonyms:
    maturation, opening, evolution, growth, elaboration, expansion
    Antonyms:
    disintegration, deterioration
  2. a significant consequence or event.

    recent developments in the field of science.

  3. a developed or advanced state or form.

    Drama reached its highest development in the plays of Shakespeare.

    Synonyms:
    ripeness, maturity
  4. Music. the part of a movement or composition in which a theme or themes are developed, or unfolded and elaborated, by various technical means, so as to reveal their inherent possibilities.

  5. a large group of private houses or of apartment houses, often of similar design, constructed as a unified community, especially by a real-estate developer or government organization.

    Synonyms:
    subdivision, community
  6. Chess. the act or process of developing chess pieces.

  7. Mining. the work of digging openings, as tunnels, raises, and winzes, to give access to new workings, and of erecting necessary structures.


development British  
/ dɪˈvɛləpmənt /

noun

  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. chess

    1. the process of developing pieces

    2. the manner in which they are developed

    3. the position of the pieces in the early part of a game with reference to their attacking potential or defensive efficiency

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Nouns

Etymology

Origin of development

First recorded in 1745–55; develop + -ment, or from French développement

Explanation

Development is the act of improving by expanding, enlarging, or refining. The merging of two university departments might lead to the development of a new curriculum. There are many other definitions for this noun, too. Real estate development is the conversion of land or property to a specific use, like housing or retail space. To grow up, we pass through many stages of development, from infancy to old age. Breaking news is often followed by developments, that is, recent events or information that's relevant to the story.

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Vocabulary lists containing development

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The company said it plans to use about 60% of its IPO’s net proceeds for research and development to advance its core autonomous- driving technology.

From The Wall Street Journal • Jul. 8, 2026

Previous studies have also linked metal exposure to lower reproductive success, fewer offspring, and disrupted brood development.

From Science Daily • Jul. 7, 2026

"A test of this length is a major development and would indicate that China is moving toward a significantly more survivable and longer-range sea-based nuclear deterrent capability," he said.

From Barron's • Jul. 7, 2026

Germany and other deep-pocketed military powers have been following the DSRB’s development and may eventually join, but not at its founding, say organizers.

From The Wall Street Journal • Jul. 7, 2026

Musical beginnings: Origins and development of musical competence.

From "Music and the Child" by Natalie Sarrazin

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