ALL meanings of hexadecimal notation
hex·a·dec·i·mal no·ta·tion
H h - noun hexadecimal notation a number system having a base 16; the symbols for the numbers 0–9 are the same as those used in the decimal system, and the numbers 10–15 are usually represented by the letters A–F. The system is used as a convenient way of representing the internal binary code of a computer 0