Definition of universal set in English:

universal set

noun

Logic Mathematics
  • The set containing all objects or elements and of which all other sets are subsets.

    • ‘For the set of its subsets clearly could not have a greater number than the number of things in the universal set itself, since that contained everything.’
    • ‘And supposing we accept the universal set of characteristics, we know that there is quite a degree of individual difference within the universal set.’