Publisher Summary This chapter explores the meson-exchange currents in electron–deuteron scattering. The elastic electron–deuteron scattering cross section has been measured at high-momentum transfer with a very surprising result. The comparison with the few available calculations in this momentum range seems to indicate that a conventional meson-exchange treatment of the deuteron form factor (FF) at high momentum is by orders of magnitudes off. The flattening out of the deuteron-FF as has been predicted does not occur, at least not in the region of present experiments. The manifestation of these results is surprising as the discrepancies between experiment and impulse approximation in thermal n–p capture and in electrodisintegration of the deuteron at threshold can be removed completely by inclusion of meson-exchange currents. The results presented in the chapter were obtained by the use of deuteron wavefunctions derived from the Reid-softcore potential. The FFs are calculated for Hamada–Johnston and super-soft-core wavefunctions, and the results are very similar. As far as the magnetic form factor is concerned, only the low momentum transfer region shows interesting features. The impulse FF has a minimum at for both types of photonnucleon FFs.