Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
cardinal [ˈkɑːdɪnl] adj (also: cardinal number) коли́чественное числи́тельное nt adj (sin) сме́ртный; (principle, importance) кардина́льный
n кардина́л
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: