I don't trust the Google dictionary...for one it doesn't state any form of reference for the definition it uses.
http://dictionary.reference.com/browse/religion
Dictionary.com (above) gives a list of different definitions from various actual published dictionaries. Wikipedia references the Dictionary.com definition in its article on religion. As I said previously, religion itself isn't a belief in a God...you can disprove that by the fact that Buddhism is a religion, or Scientology (in a vague sense). I have no doubt that the vast majority of religious people are believers, but it isn't an exclusive relationship.
http://dictionary.reference.com/browse/religion
Dictionary.com (above) gives a list of different definitions from various actual published dictionaries. Wikipedia references the Dictionary.com definition in its article on religion. As I said previously, religion itself isn't a belief in a God...you can disprove that by the fact that Buddhism is a religion, or Scientology (in a vague sense). I have no doubt that the vast majority of religious people are believers, but it isn't an exclusive relationship.