diàn
electricity
Original meaning:
lightning
Simplified form of 電, which depicts lightning (申) during a rainstorm (雨). The 雨 component was deleted for simplification.
Evolution

Bronze script
Late Western Zhou (~800 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Traditional script
ModernSimplified script
ModernDefinitions
Component uses
Meaning component in 1 character (0 verified)
Sources
季旭昇《說文新證》p.981-982