The theory that all nature is psychical or has a psychical aspect; the theory that every particle of matter has a psychical character or aspect.
"Fechner affords a conspicuous instance of the idealistic tendency to mysterize nature in his panpsychicism, or that form of noumenal idealism which holds that the universe is a vast communion of spirits, souls of men, of animals, of plants, of earth and other planets, of the sun, all embraced as different members in the soul of the world."
[Webster 1913 Suppl.]