/ˈeɪθiˌɪzəm/ Show Spelled[ey-thee-iz-uhm] Show IPA
1. the doctrine or belief that there is no God.
2. disbelief in the existence of a supreme being or beings. http://dictionary.reference.com/browse/atheism?s=t
BuddhaDhamma is compatible with both numbers 1 and 2 above. Note the capital G in number one above. Number 2 refers to "supreme beings". There are no "supreme" beings in Buddhism, period.