The definition of an atheist is a person who does not believe in the existence of any kind of God or higher power.
(noun)An example of an atheist is a person whose beliefs are based in science, such as the idea humans came from evolution rather than Adam and Eve.
See atheist in Webster's New World College Dictionary
noun
Origin: MFr athéiste: see atheism
See atheist in American Heritage Dictionary 4
noun
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