雅丹 Traditional form: 雅丹 Pinyin (reading): yǎdān Definitions: (geology) yardang (loanword) Characters: 雅 - elegant, graceful, refined 丹 - cinnabar, red, vermilion; pellet, powder Traditional characters: 雅 - elegant, graceful, refined 丹 - cinnabar, red, vermilion; pellet, powder