heliopause
(noun) the 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
Source: WordNet® 3.1
heliopause (plural heliopauses)
(astronomy) The boundary of heliosphere where the Sun's solar wind is stopped by the interstellar medium.
• heliosphere
• heliosheath
• termination shock
• stellar magnetosphere
• stellar wind
Source: Wiktionary
3 July 2025
(noun) the faculty through which the external world is apprehended; “in the dark he had to depend on touch and on his senses of smell and hearing”
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