octal

adjective

UK /ˈɒk.təl/

US /ˈɑːk.təl/

A way of counting that uses only the numbers 0 to 7.

The computer program showed the file permissions in octal form.

SYNONYMS

base-8 eight-based octonary

RELATED WORDS

binary decimal hexadecimal numeral system

OTHER MEANINGS

2. A number system with a base of eight.

In octal, the number 10 equals eight in decimal.

3. Relating to or based on the number eight.

The octal scale is used in some musical and mathematical contexts.

4. A numeral written in the base-8 system.

The value 777 is a common octal used for file permissions.