拱顶 Traditional form: 拱頂 Pinyin (reading): gǒngdǐng Definitions: an arched roof a dome a vault Characters: 拱 - to salute, to bow; arched; arch 顶 - top, summit, peak; to carry on the head Traditional characters: 拱 - to salute, to bow; arched; arch 頂 - top, summit, peak; to carry on the head