Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun heat_lightning

1 sense of heat lightning

Sense 1
heat lightning -- (bright flashes of light near the horizon without thunder (especially on hot evenings); usually attributed to distant lightning that is reflected by clouds)
       => lightning -- (the flash of light that accompanies an electric discharge in the atmosphere (or something resembling such a flash); can scintillate for a second or more)