HyperDic: heliopause

English > 1 sense of the word heliopause:
NOUNlocationheliopausethe boundary marking the edge of the sun's influence
English > heliopause: 1 sense > noun 1, location
MeaningThe boundary marking the edge of the sun's influence; the boundary (roughly 100 AU from the sun) between the interplanetary medium and the interstellar medium; where the solar wind from the sun and the radiation from other stars meet.
Broaderboundary, bound, boundsThe line or plane indicating the limit or extent of something

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