/ ˈræmədæn; NAmE ; ˌræməˈdæn/ noun
[ U , C ] the 9th month of the Muslim year, when Muslims do not eat or drink between sunrise and sunset
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WORD 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.