Tangentially adv. : In the direction of a tangent.

Example:
What Tangentially related industries have a inpact on the power tool industry? And why?

Taxonomy
tangent, tangent line, curve, graph, slope, derivative, circle, difference quotient, the origin, passing, Calculus, tangent function, straight line, tangent plane, vertex, touches, slope formula, graph of a function.

Defination from the web:
... The same definition applies to space curves and curves in n-dimensional Euclidean space. ...