from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
Lightningstroke that remains within the cloud and does not connect to the ground. A "flash" of lightning splits into many strokes and channels that spread out through the cloud. Those that eventually find a path to the ground are CG strokes. Those that don't are IC strokes.
from Wiktionary, Creative Commons Attribution/Share-Alike License
Short for "Intra-Cloud lightning".
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