convulsionist

convulsionist

(kənˈvʌlʃənɪst)
n
a person who believes that major geological changes were caused by intense convulsionsa religious fanatic, esp a fanatic in 18th-century France who went into convulsions at the tomb of François de Pâris, a Jansenist
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References in classic literature ?
As a promising way of setting them right, half of the half-dozen had become members of a fantastic sect of Convulsionists, and were even then considering within themselves whether they should foam, rage, roar, and turn cataleptic on the spot--thereby setting up a highly intelligible finger-post to the Future, for Monseigneur's guidance.