noun.
A member of the set of positive whole numbers {1, 2, 3, … }, negative whole numbers {−1, −2, −3, … }, and zero {0}.
noun.
A complete unit or entity.
The Century Dictionary and Cyclopedia
noun.
An entire entity; particularly, in arithmetic, a whole number, in contradistinction to a fraction. Thus, in the number 54.7, 54 is an integer, and .7 a fraction (seven tenths of a unit).
the GNU version of the Collaborative International Dictionary of English
noun.
A complete entity; a whole number, in contradistinction to a fraction or a mixed number.
noun.
an expression of the form a + b√-1, where a and b are real integers.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
any of the natural numbers (positive or negative) or zero