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base - definition and synonyms

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noun [countable]     base pronunciation in American English
Word Forms
  1. 1
    the bottom part, edge, or surface of something

    a tall cliff, with a narrow footpath at its base

    base of:

    The pituitary gland is at the base of the brain.

    The manufacturer’s name is printed on the base of the vase.

    1. a.
      the bottom part or section of something, that supports the rest of it

      The statue stands on a large round base.

      base of:

      The base of the castle is solid rock.

  2. 2
    a place from which an activity can be planned, started, or carried out
    base for:

    Terrorists had been using the warehouse as a base for their operations.

    Hikers find this a convenient base for their mountain expeditions.

    1. a.
      a place where members of the military live and work

      a U.S. naval base

  3. 3
    a set of ideas, facts, achievements, etc. from which something can develop
    base for:

    The report will give us a base for building a better healthcare system.

    base of:

    a broad base of experience/knowledge/expertise

    Synonyms and related words
  4. 4
    a group of people who use a particular service or do a particular job

    They have built a loyal customer base.

    1. a.
      a group of people who support someone or something, for example with money or votes

      He has a large base of support within the party.

  5. 5
    one of the four places on a baseball field that a player must touch in order to score points
    See also first base
  6. 6
    a food or substance that is the main food or substance to which other things are added

    Use the stock as a base for your sauce.

    paint with a water base

  7. 8
    maths a number that is used to form a system of counting. The usual system of counting uses base 10, and the binary system used in computers uses base 2.
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a lifestyle focussing on simple pleasures such as comfort and cosiness in the home, and spending time with friends and family

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Open Dictionary


a form of location that involves the underwater detonation of a bomb which causes sound waves that are picked up by ships

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