hexadecimal

Etymology

1952. hexadeca- + decimal; see the Wikipedia article for more information.

noun

1. (arithmetic, computing">computing, uncountable) A 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">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. (countable, computing) A number expressed in the hexadecimal system.

adj

1. Of a number, expressed in hexadecimal.