Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
constitution [kɔnstɪˈtjuːʃən] n (of country) конститу́ция; (of organization) уста́в; (health) органи́зм; (of committee etc) строе́ние
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: