Bud*dhism n. a widespread Asian religion or philosophy, founded by Siddartha Gautama in northeastern India in the 5th century BC. Buddhism has no creator god and gives a central role to the doctrine of karma. The 'four noble truths' of Buddhism state that all existence is suffering, that the cause of suffering is desire, that freedom from suffering is nirvana, and that this is attained through the 'eightfold' path of ethical conduct, wisdom, and mental discipline (including meditation). There are two major traditions, Theravada and Mahayana.