## octal

[äk**′**təl]

adjective

- of or based on the number eight
- designating an electronic tube base or its matching socket designed to hold eight equally spaced pins

Origin of octal

oct- + -al## octal

adjective

Of, relating to, or based on the number eight:

*an octal number system.*noun

A number system having 8 as its base:

*16 in base 10 is represented in octal as 20.*## octal

Noun

(*uncountable*)

- (arithmetic, computing, uncountable) The number system that uses the eight digits 0, 1, 2, 3, 4, 5, 6, 7.

Adjective

(*not comparable*)

- (arithmetic, computing) Concerning numbers expressed in octal or mathematical calculations performed using octal.

## octal - Computer Definition

A numbering system that uses eight digits. It is used as a shorthand method for representing binary characters that use six-bits. Each three bits (half a character) is converted into a single octal digit. Okta is Greek for 8.
**Decimal Binary Octal**
0 000 0
1 001 1
2 010 2
3 011 3
4 100 4
5 101 5
6 110 6
7 111 7