the boundary between the region of space dominated by the solar wind and the interstellar medium
heliopause in American English
(ˈhilioʊˌpɔz)
noun
the outer boundary of the heliosphere
heliopause in American English
(ˈhiliəˌpɔz)
noun
Astronomy
the boundary of the heliosphere
Word origin
[1970–75; helio- + pause]This word is first recorded in the period 1970–75. Other words that entered Englishat around the same time include: Heimlich maneuver, New Age, cornrow, stress test, urban legend