Essential or necessary for completeness; constituent: The kitchen is an integral part of a house.
Possessing everything essential; entire.
Mathematics Expressed or expressible as or in terms of integers.
Mathematics Expressed as or involving integrals.
A complete unit; a whole.
Mathematics A number computed by a limiting process in which the domain of a function, often an interval or planar region, is divided into arbitrarily small units, the value of the function at a point in each unit is multiplied by the linear or areal measurement of that unit, and all such products are summed.