- (mathematics) a numeral appearing in the fractional part of a number written in positional notation (i.e. after the radix point), e.g. a numeral in some decimal place in a decimal number
This word refers to the numerals themselves rather than their positions, so its meaning is not quite the same as that of English decimal place or place; however, it is often used in similar contexts, such as when counting decimal places, e.g. námunda að þremur aukastöfum (“to round to three decimal places”).