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verb [transitive] supersede pronunciation in British English /ˌsuːpə(r)ˈsiːd/ 
Word Forms
present tense
present participlesuperseding
past tensesuperseded
past participlesuperseded
  1. if one thing supersedes another, it replaces the other thing, especially because it is more modern or more useful

    Steam trains were gradually superseded by diesel engines.

    The Chemical Weapons Convention supersedes all earlier agreements.


a paid holiday given to a new employee before they start their job

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selfie stick

an expandable stick which you attach to a mobile phone or camera to help you take a selfie …

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