| Subject | English | Japanese |
| phys. | hexadecimal constant | 16進定数 (じゅうろくしん・ていすう) |
| phys. | hexadecimal digit | 16進数字 (じゅうろくしん・すうぢ) |
| comp., MS | hexadecimal escape sequence | 16 進数のエスケープ シーケンス (In regular expressions, a backslash followed by the letter "x" followed by a sequence of hexadecimal digits. It matches a character in the target sequence that has the value that is specified by the two digits) |
| phys. | hexadecimal notation | 16進法 (じゅうろくしんほう) |
| comp. | n hexadecimal notation | １６進法 |
| comp. | n hexadecimal notation | 十六進法 |
| phys. | hexadecimal number | 16進数 (じゅうろくしん・すう) |
| comp., MS | hexadecimal value | 16 進値 (A value that follows a format of 4 channels--including an alpha channel--and is composed in the following format: AARRGGBB. Hex is commonly used for Web and screen design as many browsers render colors based upon hex values) |