Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: lightning  lIt-ning
  1. Abrupt electric discharge from cloud to cloud or from cloud to earth accompanied by the emission of light
  2. 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

Derived forms: lightnings

Type of: atmospheric electricity, flash

Encyclopedia: Lightning, Tampa Bay