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Meaning of foudroyant

fou•droy•ant

Pronunciation: (f-droi'unt Fr. f-drwa-yän'), [key]
— adj.
  1. striking as with lightning; sudden and overwhelming in effect; stunning; dazzling.
  2. (of disease) beginning in a sudden and severe form.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.