/hek'seuh des"euh meuhl/ , adj. Computers, Math.
1. Also, hex . of or pertaining to a numbering system that uses 16 as the radix, employing the numerals 0 through 9 and representing digits greater than 9 with the letters A through F.
2. relating to or encoded in a hexadecimal system, esp. for use by a digital computer.
[ 1955-60; HEXA- + DECIMAL ]