The leftmost, non-zero digit in a number. It is the digit with the greatest value in the number. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Eg, 34 has 3 tens and 4 units, or say 34 has 3 tens and 4 ones. The digit 2 has the greatest place value. This is most significant value and represents the 1st significant figure. It is positioned ...