| irrationale Zahl | irrational number |
| rationale Zahl | rational number rational numbers |
| Irrationalität | irrationality |
| imaginäre Zahl | imaginary number |
| Irrationalismus | irrationalism |
| irrationell | irrational |
| irrational | irrational |
| Rationale | rationale |
| Cardinalzahl | cardinal numeral |
| Kardinalzahl | cardinal number cardinal numeral |
| Ordinalzahl | ordinal number |
| ideale Zahl | ideal number |
| Nationalrat | National Council |
| Rationalismus | rationalism |
| arational | arational |
| rational | rational |
| rationell | economic |
| Nationaltracht | national costume |
| Oxidationszahl | oxidation number |
| Nationalepos | national epic |