ハイドロラコリスMeanings1nounhydrolaccolith; pingogeologyA geological term for a mound of earth-covered ice formed in permafrost regions; also called a pingo.ハイドロラコリスは永えい久きゅう凍とう土ど地ち域いきに見みられる地ち形けいである。Hydrolaccoliths are landforms found in permafrost regions.