coronal mass ejection

/K ER0 OW1 N AH0 L M AE0 S IH0 JH EH0 K SH AH0 N/
noun
  1. 1

    A massive burst of solar wind, other light isotope plasma, and magnetic fields rising above the solar corona or being released into space.

Source: https://en.wiktionary.org/wiki/coronal%20mass%20ejection