1.
If you describe something as ~, 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. (FORMAL)
Too much time was spent discussing ~ issues...
ADJ
2.
If something is ~ to something else, it is at a tangent to it.
...point T, where the demand curve is ~ to the straight line L.
ADJ: oft ADJ to n