| Subject | English | German |
| environ. | International Reference Life Cycle Data System | Referenzsystem für Lebenszyklusdaten |
| environ. | International Reference Life Cycle Data System ILCD Data Network | ILCD-Datennetzwerk |
| radiat. | international reference system | Internationales Referenzsystem (of the International Bureau of Weights and Measures for activity measurement of γ-emitting nuclides) |