What is the little dot that separates whole numbers from the parts of a whole?

The little dot that separates whole numbers from the parts of a whole is called a decimal point. It is used in decimal notation to indicate that the numbers to the right represent fractional values, such as tenths, hundredths, and so on. For example, in the number 3.14, the decimal point separates the whole number 3 from the fractional part 14.