What do you call the decimal part of a decimal?

Question

What do you call the decimal part of a decimal? Is it "decimal values"?

3.14159

Answer 1

Formally, it's sometimes called the mantissa, but I don't think anyone except math professors ever says that. The most common terms are fractional part or decimal part.

For example,

The decimal point together with the digits lying on the right of decimal point form the decimal part.

The part from the decimal separator to the right is the fractional part...

"Decimal values" would be confusing because it sounds like it's referring to more than one value, and something like ".314159" is only one value.