The term "whole" refers to something that is complete and undivided. It signifies that all parts are present and functioning together as a single entity. For example, a whole apple includes the skin, flesh, and seeds, all contributing to its identity as an apple. In mathematics, a "whole number" is a non-negative integer that does not include fractions or decimals. Whole numbers start from zero and include numbers like 0, 1, 2, 3, and so on. This concept is essential in various fields, including arithmetic and counting.