Anti-Lebanon Mountains Syllabification: (An·ti-Leb·a·non Moun·tains)Pronunciation: /ˌantē ˈlebənən, -əˌnän/Definition of Anti-Lebanon Mountains a range of mountains that run north to south along the border between Lebanon and Syria, east of the Lebanon range. Anti-Lebanon Mountains in other Oxford dictionaries Definition of Anti-Lebanon Mountains in the British & World English dictionary