Nouns

(n)integralthe result of a mathematical integration; F(x) is the integral of f(x) if dF/dx = f(x)

Adjectives

(s)built-in, constitutional, inbuilt, inherent, integralexisting as an essential constituent or characteristic“the Ptolemaic system with its built-in concept of periodicity”, “a constitutional inability to tell the truth”
(s)integral, entire, intactconstituting the undiminished entirety; lacking nothing essential especially not damaged“a local motion keepeth bodies integral” (Bacon), “was able to keep the collection entire during his lifetime”, “fought to keep the union intact”
(a)integralof or denoted by an integer