sexadecimal number system (noun)

1. The artist used the sexadecimal number system to represent complex color combinations in their artwork.

2. Why did the computer programmer use the sexadecimal number system? Because they couldn't resist a 'hexy' joke!

3. In the futuristic comic book series, the protagonist communicates with robots using the sexadecimal number system.

4. In the animated TV show, the alien characters speak in a unique language based on the sexadecimal number system.