anomaly (n.)youdaoicibaDictYouDict[anomaly 词源字典]
1570s, from Latin anomalia, from Greek anomalia "inequality," noun of quality from anomalos "uneven, irregular," from an-, privative prefix, "not" (see an- (1)) + homalos "even," from homos "same" (see same).[anomaly etymology, anomaly origin, 英语词源]