Flowing out; emanating.
noun.
That which flows out or issues forth.
noun.
Specifically, in geography, a stream that flows out of another stream or out of a lake: as, the Atchafalaya is an effluent of the Mississippi river.
noun.
In mathematics, a covariant of a quantic of degree mn in i variables, the covariant being of degree m and in p variables, where p is the number of permutations that can be obtained by dividing n into i parts.