| Sekundärinfektion | secondary infection |
| Darminfektion | enteral infection |
| Sekundarstufe II | sixth form |
| Säkularisation | secularization |
| Autoinfektion | autoinfection |
| Desinfektion | disinfection |
| Reinfektion | reinfection |
| Dekontamination | decontamination |
| Sekundant | second |
| Sekundärquelle | secondary source |
| Untersektion | subsection |
| Sekretion | secretion |
| Sekundärtugend | secondary virtue |
| sekundieren | second |
| Säkularistin | secularist |
| Kerninflation | core inflation |
| Infektion | infection |
| Konfektion | make manufacture ready-to-wear off-the-peg clothing off-the-rack clothing clothing industry |
| Perfektion | perfection |
| sexuelle Selektion | sexual selection |