Buddhism. n. 1. (Buddhism) a religious teaching propagated by the Buddha and his followers, which declares that by destroying greed, hatred, and delusion, which are the causes of all suffering, man can attain perfect enlightenment.See nirvana.uddhism. n. 1. (Buddhism) a religious teaching propagated by the Buddha and his followers, which declares that by destroying greed, hatred, and delusion, which are the causes of all suffering, man can attain perfect enlightenment. See nirvana.