elektronski

1. electronic
   Pošaljite nam prijavu elektronskom poštom. — Send us your application by email.
   Voli da sluša elektronsku muziku. — He likes listening to electronic music.
2. (in physics) electron
   Uzorak su posmatrali pod elektronskim mikroskopom. — They examined the sample under an electron microscope.

Elektronska pošta means "email", though mejl is more common in speech.