eccentricity (n.)youdaoicibaDictYouDict[eccentricity 词源字典]
1540s, of planetary orbits; 1650s, of persons (an instance of eccentricity); 1794, of persons (a quality of eccentricity); from eccentric (adj.) + -ity or from Modern Latin eccentricitatem, from eccentricus. Related: Eccentricities.[eccentricity etymology, eccentricity origin, 英语词源]