preimage

About 0.02 uses per million words.

Meaning

1. noun For a given function, the set of all elements of the domain that are mapped into a given subset of the codomain; given a function ƒ : X → Y and a subset B ⊆ Y, the set ƒ(B) = {x ∈ X : ƒ(x) ∈ B}.

   The preimage of {4,9} under the function f:ℝ→ℝ:f(x)=x2 is the set {−3,−2,+2,+3}.

Similar words

image inclusion inverse image predimension inclusion function partial function fiber codomain fibre subimage

Often followed by

of resistance and is resistant in under for point