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root - definition and synonyms

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noun     root pronunciation in American English
Word Forms
  1. 1
    [countable] the part of a plant that grows under the ground, through which the plant gets water and food
  2. 2
    [countable] the part of a hair, tooth, or nail that is under your skin
  3. 3


    [plural] the place, culture, or family that someone comes from originally
    go back to your roots:

    With this latest book the author goes back to his Scottish roots.

    1. a.
      the origins or background of something

      What are the historical roots of the region’s problems?

      have its roots in something:

      The Association has its roots in the early 1950s.

  4. 4
    [countable] a basic cause or idea

    an unusual movie with an ingenious idea at its root

    root of:

    We need to get to the root of the problem.

    Synonyms and related words
  5. 5
    [countable] maths the root of a number is another number that, when multiplied by itself a particular number of times, equals that number. For example, 3 is the square root of 9 and the cube root of 27.
  6. 6
    [countable] linguistics the most basic form of a word, or a word that is the base for other words
  7. 7
    [countable] music the note that forms the base of a chord in music
  8. 8
    [countable] medical the end of a nerve that is closest to the center of your body
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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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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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