Wordnet 3.0
NOUN (1)
1.
an electrical discharge accompanied by ionization of surrounding atmosphere;
[syn: corona discharge, corona, corposant, St. Elmo's fire, Saint Elmo's fire, Saint Elmo's light, Saint Ulmo's fire, Saint Ulmo's light, electric glow]
WordNet (r) 3.0 (2006):
corona discharge
n 1: an electrical discharge accompanied by ionization of
surrounding atmosphere [syn: corona discharge, corona,
corposant, St. Elmo's fire, Saint Elmo's fire, Saint
Elmo's light, Saint Ulmo's fire, Saint Ulmo's light,
electric glow]