heliosphere heliosis • heliostat · · · Info · Definitions · Characters · · heliosphere · · Text Latin · · Script 11 · · Length 3 · · Syllables Definitions · · · (noun) the region inside the heliopause containing the sun and solar system. · · Noun Definition 1 Characters · · e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073