Definition of heliosphere
: the region in space influenced by the sun or solar wind
heliosphericplay \ˌhē-lē-ə-ˈsfir-ik, -ˈsfer-, -lē-ō-\ adjective
Origin and Etymology of heliosphere
International Scientific Vocabulary
First Known Use: 1976See Words from the same year
Seen and Heard
What made you want to look up heliosphere? Please tell us where you read or heard it (including the quote, if possible).