词根：-tract-

【词根含义】：拉,引

【词根来源】：来源于拉丁语动词traho, trahere, traxi, tractus(拉)。

【同源单词】：abstract, abstraction, attract, attraction, attractive

前缀：dis-

【词根含义】：否定,相反;除去;分离,分开,散开;恶化;加强意义

【词根来源】：来源于拉丁语前缀dis-。

【同源单词】：disable, disabled, disadvantage, disadvantageous, disaffect

词根词缀：dis-, di-, dif-

【来源及含义】Latin: separation, apart, asunder; removal, away, from; negation, deprivation, undoing, reversal, utterly, completely; in different directions

【相关描述】The meaning of dis- varies with different words; dif-, assimilated form of dis- before f; di-, form of dis- before b, d, g, l, m, n, r, and v.

【同源单词】diffect, differ, difference, different, differentia, differential

词根词缀：tra-, tract-, trac-, -tractive, -traction, -tracting, treat-, trai-

【来源及含义】Latin: drag, draw together; a drawing out or pulling

【同源单词】abstract, abstract, abstracted, abstractedly, abstractedness, abstraction