[en] A glossary in German is given of 124 terms usually in nuclear power technology concerning the fields of: nuclear power plants, nuclear energy, nuclear fuels and fuel cycles, reactor operation conditions, reactor components, radiation and environmental burdens. The terms are taken from international documents especially from ISO 921 (1972) and are formulated in German in agreement with the other German speeking countries (F.R. Germany, Democratic Rep. of Germany and Switzerland). The only in Austria used expressions are marked by an A. (M.T.)