biquinary
adjective
bi·quinary
(ˈ)bī+
: of, based on, being, or relating to a mixed-base system of numbers in which each decimal digit n is represented as a pair of digits xy where n = 5x + y and x is written in base 2 as 0 or 1 and y is written in base 5 as 0, 1, 2, 3, or 4
decimal 9 is represented by biquinary 14
Word History
Etymology
bi- entry 1 + quinary
First Known Use
1871, in the meaning defined above