leader stroke

leader stroke

[′lēd·ər ‚strōk]
(geophysics)
The entire set of events associated with the propagation of any leader between cloud and ground in a lightning discharge.
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TOKYO, Jan 2 (KUNA) -- South Korean Foreign Minister Kim Sung-hwan on Wednesday urged North Korea to make "wise and right decisions," a day after the North's young leader stroke a conciliatory tone on ties with the South, Yonhap News Agency reported.
As the leader stroke nears the ground, a pilot stroke will often arise from the ground to meet it about 50 m above the surface, thus completing the electrical arc.