Definify.com
Webster 1913 Edition
Immaterialism
Imˊma-te′ri-al-ism
,Noun.
[Cf. F.
immatérialisme
.] 1.
The doctrine that immaterial substances or spiritual being exist, or are possible.
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.
Webster 1828 Edition
Immaterialism
IMMATE'RIALISM
,Noun.