坍塌 tāntā collapse Definitions Defs Origin Strokes Stroke Words Sentences Sents 坍 tān collapse Phonosemantic compound. 土 represents the meaning and 丹 represents the sound. Components 土 土 Meaning component tǔ earth 丹 丹 Sound component dān, dan cinnabar Historical Pronunciations Old ChineseZhengzhangn̥ʰaːm Sources Readings & variants Unicode Historical pronunciations Zhengzhang Shangfang 塌 tā fall in ruins Components 土 土 Meaning component tǔ earth earth 日 日 Unknown component rì sun 羽 羽 Unknown component yǔ feather Historical Pronunciations Old ChineseZhengzhangtʰaːb Sources Readings & variants Unicode Historical pronunciations Zhengzhang Shangfang