solar flare

WordReference Random House Unabridged Dictionary of American English © 2025

so′lar flare′, [Astron.]

1. Astronomy flare (def. 22).

• 1935–40

Collins Concise English Dictionary © HarperCollins Publishers::

solar flare noun

1. a brief powerful eruption of particles and intense electromagnetic radiation from the sun's surface, associated with sunspots and causing disturbances to radio communication on earth
   See also solar wind