"ˌ noun
Etymology: magnet- + tail
: the region of the magnetosphere of a celestial body (as a planet) that is swept back by the solar wind in the direction away from the sun
"ˌ noun
Etymology: magnet- + tail
: the region of the magnetosphere of a celestial body (as a planet) that is swept back by the solar wind in the direction away from the sun
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012