outer core

/AW1 T ER0 K AO0 R/
noun
  1. 1

    (geology) The part of the Earth between the mantle and inner core, responsible for generating the planet's magnetic field.

  2. 2

    (planetology) The hot liquid material found near the centre of some planets, distinct from the solid inner core.

  3. 3

    Used other than figuratively or idiomatically: see outer, core.