retarc (English, noun)
expansion: retarc (plural retarcs)
Senses:
topics: geography
geology
natural-sciences
qualifier: nuclear testing
glosses: A rubble mound occasionally formed by a powerful underground explosion (usually nuclear) in solid rock, due to the chimney of shattered rock above the explosion occupying a greater volume than the solid rock previously present.
Forms:
form: retarcs
tags: plural