- Source: Eikonal
Eikonal is the German form of the Greek word εἰκών, meaning likeness, icon or image. It can refer to:
Eikonal equation, a non-linear partial differential equation encountered in problems of wave propagation.
Eikonal approximation, a method of approximation useful in wave scattering equations.
Operation Eikonal, an operation conducted by the National Security Agency in collaboration with the Bundesnachrichtendienst