Ramadan
Pronunciation: /ˈramədan, ˌraməˈdan/
(also Ramadhan /-zan/)
noun

Origin:
from Arabic ramaḍān, from ramaḍa 'be hot'. The lunar reckoning of the Muslim calendar brings the fast eleven days earlier each year, eventually causing Ramadan to occur in any season; originally it was supposed to be in one of the hot months