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Noun: corona discharge
  1. An electrical discharge accompanied by ionization of surrounding atmosphere
    - corona, corposant [archaic], St. Elmo's fire, Saint Elmo's fire, Saint Elmo's light, Saint Ulmo's fire, Saint Ulmo's light, electric glow

Derived forms: corona discharges

Type of: arc, discharge, electric arc, electric discharge, spark

Encyclopedia: Corona discharge