| ration | ration |
| Ration K | K-ration |
| rationalisation | rationalization |
| Rationalisation et mathématisation de la musique | Music and mathematics |
| rationaliser | streamline |
| rationalisme | rationalism |
| rationaliste | rationalist |
| Rationalité limitée | Bounded rationality |
| Rationalité économique | Rational choice theory |
