Definition of radix in US English:



  • 1Mathematics
    The base of a system of numeration.

    See also base (sense 8 of the noun)
    • ‘Here r is the base, or radix, and the coefficients d i are the digits of the number.’
    • ‘Everything hinges on the assumption that the incremental cost of increasing the radix is the same as the incremental cost of increasing the number of digits.’
    • ‘All that is needed to comprehend the puzzle is understanding that counting by grouping is most easily recorded in the positional notations, radix being the largest group size.’
  • 2rare A source or origin of something.

    ‘Judaism is the radix of Christianity’
    • ‘The unturned chart is called the ‘radical figure’, the radix - the root from which all the symbolism emerges.’
    origin, place of origin
    View synonyms


Early 17th century (in radix (sense 2)): from Latin, literally ‘root’. radix (sense 1) dates from the late 18th century.