dart leader

dart leader

[′därt ‚lēd·ər]
(geophysics)
The leader which, after the first stroke, initiates each succeeding stroke of a composite flash of lightning. Also known as continuous leader.
References in periodicals archive ?
USAID's DART Leader Bill Berger accepted the award on behalf of the DART, "This award is a great honor which recognizes the contributions of countless people at USAID who worked to save lives and eliminate the suffering of the Pakistani people.
A dart leader heads from the cloud down the original channel but sometimes forges a different path to the ground, adding a fork to the bolt.