mediumism
(ˈmiːdɪəmɪz(ə)m)
[f. prec. + -ism.]
The practices of spiritualistic ‘mediums’.
| 1864 A. Leighton Myst. Leg. Edin. (1886) 121 The spirit-rapping miracles of mediumism. 1880 Howells Undisc. Country xii. 181 A mercenary professional mediumism. |