asymmetry (n.)youdaoicibaDictYouDict[asymmetry 词源字典]
1650s, "want of symmetry or proportion," from Greek asymmetria, noun of quality from asymmetros "having no common measure; disproportionate, unsymmetrical," from a- "not" + symmetros "commensurable" (see symmetry).[asymmetry etymology, asymmetry origin, 英语词源]