OSIRIS Meaning of OSIRIS in English O ‧ si ‧ ris /əʊˈsaɪ ə rəs, əʊˈsaɪ ə rɪs/ BrE AmE in ancient Egyptian ↑ mythology , the god of the dead, who was the husband and brother of ↑ Isis Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012