1. relating to or using a number system with a base of eight
Usage: computing; mathematics

1. a number system that uses eight as its base, using digits 0 through 7
Usage: computing; mathematics

Examples

• The programmer converted the decimal number to octal format.
• In octal notation, the digit 8 does not exist.
• The computer science course covered binary, octal, and hexadecimal systems.
• She learned to count in octal: 0, 1, 2, 3, 4, 5, 6, 7, 10, 11.
• The octal number 17 equals 15 in decimal.
• Early computers sometimes used octal representation for memory addresses.