定義域 Save Sign in to save words Simplified: 定义域 dìngyìyù ㄉㄧㄥˋ ㄧˋ ㄩˋ domain (math.) Character by character 定(dìng)fix 義(yì)surname Yi 域(yù)field A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0