IMMATERIALISM

immaterialism. Immaterialism, n. the doctrin of the existence or state of immaterial or spiritual substances

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Im′ma‐te″ri‐al‐ism (?), n. [[Cf. F. immatérialisme.]] 1. 1. The doctrine that immaterial substances or spiritual being exist, or are possible.
2. 2. (Philos.) The doctrine that external bodies may be reduced to mind and ideas in a mind; any doctrine opposed to materialism or phenomenalism, esp. a system that maintains the immateriality of the soul; idealism; esp., Bishop Berkeley's theory of idealism.