地ち殻かく均きん衡こう説せつちかくきんこうせつMeanings1nounisostasy; theory of isostasyrare termgeologyGeological term for the equilibrium of the Earth's crust floating on the mantle. Rare; the loanword アイソスタシー is more common in modern Japanese.See also: アイソスタシー地ち殻かく均きん衡こう説せつは、山さん
