奥陶系 Save Sign in to save words Traditional (Taiwan): 奧陶系 àotáoxì ㄠˋ ㄊㄠˊ ㄒㄧˋ Ordovician system (geology) Character by character 奥(ào)Austria 陶(táo)surname Tao 系(xì)connect A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0