differentia
/ˌdɪfəˈrenʃɪə/noun
(pl.differentiae /-ʃɪiː/)
1- a distinguishing mark or characteristic区别标记; 区别特征。
1.1
- chiefly Philosophy an attribute that distinguishes a species of thing from other species of the same genus【主哲】种差。
词源
late 17th cent.: from Latin, literally 'difference', from different- 'carrying away' （see DIFFERENT）.