noun he·li·o·sphere \ˈhē-lē-ə-ˌsfir, -ō-\

Definition of heliosphere

  1. :  the region in space influenced by the sun or solar wind


play \ˌhē-lē-ə-ˈsfir-ik, -ˈsfer-, -lē-ō-\ adjective

Origin and Etymology of heliosphere

International Scientific Vocabulary

First Known Use: 1976

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