Sikkim Syllabification: (Sik·kim)Pronunciation: /ˈsikim/Definition of Sikkim a state in northeastern India, in the eastern Himalayas, between Bhutan and Nepal, on the border with Tibet; capital, Gangtok. After British rule, it became an Indian protectorate and then, in 1975, a state of India. Derivatives SikkimesePronunciation: /ˌsikiˈmēz, -ˈmēs/ adjective & noun Sikkim in other Oxford dictionaries Definition of Sikkim in the British & World English dictionary