| Spektralklasse | spectral class |
| Spektralanalyse | spectral analysis spectrum analysis |
| Spektralfarbe | prismatic colour spectral colour |
| Spektrallinie | spectral line |
| Spektralfarben | prismatic colors |
| Spielklasse | league |
| Steuerklasse | tax bracket |
| Spektral- | spectral |
| Spektroskopie | spectroscopy |
| spektral | spectral |
| Spezialkräfte | special forces |
| spektakulär | spectacular |
| Straklatte | spline |
| Mitralklappe | mitral valve |
| Generalklausel | comprehensive clause |
| Nominalklasse | noun class |
| Mittelklasse | middle class |
| Schulklasse | class |
| zweiter Klasse | second-class |
| Überklasse | superclass |