Definition
The set of non-negative counting numbers with no fractional or decimal part: 0, 1, 2, 3, 4, and so on. Whole numbers do not include negative numbers, fractions, or decimals.
Plain English
Counting numbers starting at zero, with nothing after a decimal point. Things like 0, 1, 2, 3 — not 1.5, not -2, not 3/4.
Context Anchor
Seen in aviation maintenance math when counting parts, reading simple quantities, or working problems that use complete units rather than fractions or decimals.
Derivation
From Old English 'hal' meaning complete or unbroken — a whole number is one that hasn't been broken into pieces (fractions) or extended past the decimal point.
Why Pilots Care
Maintenance work often requires knowing whether a value is an exact count or only part of a unit. Mixing up whole numbers with fractions or decimals can lead to wrong quantities in a calculation or parts list.
Intuition Check
Whole does not mean rounded off or approximate here. A whole number has no fractional or decimal part.
Example Sentence 1
When counting the number of rivets installed on a panel, the result is always a whole number.
Example Sentence 2
Record the total hours on the component in whole numbers before signing off the work order.