| Ionisationstechnik | Ionisation technique ionization technique |
| Informationstechnik | information technology |
| Ionisationseffekt | ionisation effect |
| Ionisationsröhre | ionisation tube ionization tube |
| Ionisationssensor | ionisation sensors |
| Ionisationskammer | ionization chamber |
| Ionisationsleistung | ionization power |
| Ionisationsstab | ionization bar ionizing bar |
| Koalitionsrechner | coalition builder |
| Sensationsmache | sensationalism |
| Variationsrechnung | calculus of variations |
| Ionisation | ionization ionisation |
| Ionisationsmessröhre | fast ionization gauge |
| Populationsgenetik | population genetics |
| Zwölftontechnik | twelve-tone technique |
| Radiotechnik | radio engineering |
| Initiationsceremonie | initiation ceremony |
| Initiationszeremonie | initiation ceremony |
| Iterationsschritt | iteration |
| Kollisionsrecht | private international law |