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Saint Elmo's fire |
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Saint Elmo's fire [ˈɛlməʊz] n usually abbreviated to St Elmo's fire (Physics / General Physics) (not in technical usage) a luminous region that sometimes appears around church spires, the masts of ships, etc. It is a corona discharge in the air caused by atmospheric electricity Also called corposant [so called because it was associated with Saint Elmo (a corruption, via Sant'Ermo, of Saint Erasmus, died 303) the patron saint of Mediterranean sailors]
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