Thammuz Syllabification: (Tham·muz)Pronunciation: /ˈtämo͝oz, täˈmo͞oz/ (also Tammuz)Definition of Thammuz noun (in the Jewish calendar) the tenth month of the civil and fourth of the religious year, usually coinciding with parts of June and July. Origin:from Hebrew tammūzThammuz in other Oxford dictionaries Definition of Thammuz in the British & World English dictionary