Atheism is technically a religion based on the definition of a religion. 1. a set of beliefs concerning the cause, nature, and purpose of the universe, especially when considered as the creation of a superhuman agency or agencies, usually involving devotional and ritual observances, and often containing a moral code governing the conduct of human affairs. 2. a specific fundamental set of beliefs and practices generally agreed upon by a number of persons or sects. 3. the body of persons adhering to a particular set of beliefs and practices: a world council of religions. http://dictionary.reference.com/browse/religion