'Convulsionist' definitions:

Definition of 'Convulsionist'

From: GCIDE

Convulsionist \Con*vul"sion*ist\, n. One who has convulsions; esp., one of a body of fanatics in France, early in the eighteenth century, who went into convulsions under the influence of religious emotion; as, the Convulsionists of St. M['e]dard. [1913 Webster]