Ramadan n.

ninth month of the Muslim year, period of the annual thirty-days' fast, 1590s, earlier Ramazan (c. 1500), from Arabic Ramadan (Turkish and Persian ramazan), originally "the hot month," from ramida "be burnt, scorched" (compare Mishnaic Hebrew remetz "hot ashes, embers"). In the Islamic lunar calendar, it passes through all seasons in a cycle of about 33 years, but evidently originally it was a summer month.