in relation to a particular aspect; with respect to; as regards; concerning; regarding.
[of one variable or unit of measurement x which has a known relationship to another y] Using equivalent expressions in y in place of expressions in x; mapping x to y.
In relation to; in connection with; with respect to.
Similar to; as an instance of; as a kind of.
In or into a position of being likely to obtain, to attain, or to achieve.