Definitions
1.NounA number system with base sixteen, using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F, most used in computing as a hexadecimal digit can represent four bits, half a standard byte, and thus a single byte can be represented conveniently with two digits.
2.NounA number expressed in the hexadecimal system.
3.AdjectiveOf a number, expressed in hexadecimal.