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layer - definition and synonyms


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noun [countable] layer pronunciation in British English /ˈleɪə(r)/
Word Forms
  1. 1
    an amount or sheet of a substance that covers a surface or that lies between two things or two other substances
    Glue the layers together and let them dry.
    layer of: Finish with a layer of mashed potato and grated cheese.
    Luckily the little girl was wearing several layers of warm clothing.
    There was a thin layer of ice on the pavements.
  2. 2
    a level or rank within an organization or system
    layer of: another layer of bureaucracy


a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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