the philosophy of George Berkeley, which holds that what are called physical objects exist only as ideas in God's mind and, in other minds, as perceptions of those ideas
See Berkeleianism in American Heritage Dictionary 4
(bärkˈlē-ə-nĭzˌəm, bûrˈ-)
noun
George Berkeley's philosophy of subjective idealism, which holds that material objects have no independent being but exist only as concepts in God's mind and as perceptions of those concepts in other minds.