# retarc

> English word · Noun · IPA /ˈɹiːtɑː(ɹ)k/

## Definitions
1. 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.

## Etymology
From crater reversed, signifying the formation of an elevated mound rather than the typical sunken crater.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/retarc