If you describe something as tangential, you mean that it has only a slight or indirect connection with the thing you are concerned with, and is therefore not worth considering seriously.
例句
Too much time was spent discussing tangential issues...太多的時間花在了討論那些無關緊要的問題上。They thought the whole thing was a side-show, tangential to the real world of business.他們認為整件事情只是一個插曲，和真正的商界沒有多大關系。
ADJ
切線的;相切的
If something is tangential to something else, it is at a tangent to it.
例句
...point T, where the demand curve is tangential to the straight line L.需求曲線和直線 L 相切之點 T...the street tangential to the courthouse square.和法院大樓廣場相切的那條大街
英漢詞典釋義
adj.
(幾何中的)切線的;正切的
tangential acceleration切向加速度
英英詞典釋義
Adjective
1. of superficial relevance if any;
"a digressive allusion to the day of the week""a tangential remark"
2. of or relating to or acting along or in the direction of a tangent;