positional notation(redirected from Positional number system)
Also found in: Dictionary, Thesaurus.
Related to Positional number system: positional notation
positional notation[pə′zish·ən·əl nō′tā·shən]
Any of several numeration systems in which a number is represented by a sequence of digits in such a way that the significance of each digit depends on its position in the sequence as well as its numeric value. Also known as notation.