Singular
supercontinent

Plural
supercontinents

  1. (countable) A supercontinent is a very large continent that was broken up into smaller ones in Earth's past.
    The supercontinent of Pangaea was made up of all of today's continents.
  2. (countable) A supercontinent is a large area of land that is made up of many different continents, like Africa-Eurasia.