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n.
(mathematics) the set of values of the dependent variable for which a function is defined; "the image of f(x) = x^2 is the set of all non-negative real numbers if the domain of the function is the set of all real numbers"
adj.
providing or receiving nurture or parental care though not related by blood or legal ties; "foster parent"; "foster child"; "foster home"; "surrogate father"
adj.
derived from what is primary or original; not firsthand; "a secondhand report"; "a secondhand account of a memory of something once read"; "most of our knowledge is secondhand"