heliosphere

== English == === Etymology === From helio- +‎ -sphere. === Pronunciation === === Noun === heliosphere (plural heliospheres) (astronomy) The region of space where interstellar medium is blown away by solar wind; the boundary, heliopause, is often considered the edge of the Solar System. Hypernym: astrosphere Hyponyms: inner heliosphere, outer heliosphere Hyponyms: bow shock, heliopause, heliosheath, termination shock, solar magnetosphere, solar wind ==== Derived terms ==== ==== Related terms ==== ==== Translations ====