séance /ˈseɪˌɑns/noun 2verb 1forms 6 noun2 •A ceremony where people try to communicate with the spirits of dead people, usually led by a medium.[B]ut only too often séances degenerate into pure sorcery or necromancy, attracting all kinds of undeveloped and earth-bound entities. — 1936 •(old-fashioned) The sitting of an assembly to discuss a matter. verb1 •To hold a séance (communication with spirits). formsseanced · séanced · seancing · séancing · séances · seances