natural number
nounUK /ˈnætʃrəl ˈnʌmbə/
US /ˈnætʃərəl ˈnʌmbər/
A natural number is a counting number like 1, 2, 3, and so on.
The numbers 1, 2, and 3 are natural numbers.
RELATED WORDS
OTHER MEANINGS
2. In some math books, a natural number can also include zero.
Some teachers say 0, 1, 2, 3 are natural numbers.
3. A number used to count things in everyday life.
We used natural numbers to count the apples in the basket.
4. A number with no fractions or decimals.
Seven is a natural number, but 7.5 is not.