Geospace

//ˈd͡ʒiːəʊˌspeɪs// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The region of outer space near Earth, including the upper atmosphere, ionosphere and magnetosphere. uncountable
  2. 2
    The region of space that goes from the solar photosphere to the mesosphere of Earth. It includes the solar photosphere, chromosphere and corona, the solar wind, Earth's magnetosheath, magnetosphere, thermosphere, ionosphere and mesosphere. uncountable

Etymology

From geo- + space.

Related phrases

outer spacesolar wind

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.