What do you mean by Digit in math?

An online digit number definition

Digits are the symbols to represent a number visually.

A digit is a combination of whole number (0,1,2,3,4,5,6,7,8,9).

For example, the number 786 is made up of 3 digits. Each digit has a place value. In the number 786, the 6 is the number of ones in the number.