† pneumatophonyn. [probably after French pneumatophonie (1863 or earlier)] Obsolete the supposed utterance of words and articulate sounds by disembodied spirits.
ΚΠ
1890 Cent. Dict.Pneumatophony, so-called spirit-speaking; the supposed production of articulate sounds, resembling the human voice or speech, and conveying intelligence, by disembodied spirits.