Philos. [f. prec. + -ISM.] The doctrine that there are substantial realities underlying phenomena.
1881. W. James, in Princeton Rev., July, 63. Agnostic substantialism like that of Mr. Spencer.
1888. Microcosm (N. Y.), Dec., 3. The fundamental tenet … of Substantialism maintains that besides the material substances in the general constitution of Nature there are also forms of immaterial substance.
