octonary

9.9

The number eight

noun
/ɒkˈtoʊnəri/

Archaic

: octonario

The octonary system is based on eight digits.

Examples

In mathematics, an octonary is represented by the number eight.
The code uses an octonary system for its calculations.
An octonary sequence is often found in certain mathematical models.
She grouped the samples into sets of octonary for her experiment.
In mathematics, an octonary is represented by the number eight.
The octonary system is based on eight digits.
She grouped the samples into sets of octonary for her experiment.

Synonyms

eight

vsoctonary

∞ 1.0

The number after seven and before nine

is the same number but presented in a less common, archaic form

VIII

vsoctonary

24 1.8

A Roman way of writing the number eight

is written as words rather than as symbols

ogdoad

vsoctonary

Archaic

1 9.9

A group of eight things

focuses on the single cardinal number rather than a counted group

octad

vsoctonary

9.0

A group of eight people or things

is used mainly for the cardinal number itself rather than a group

Surface Forms

octonary singular

octonaries plural

Morphology

octonary = octo (semi-transparent) = octo + nary

The root 'octo' is clear for representing 'eight', but the suffix 'nary' may not be immediately recognizable to learners.

Etymology

The word octonary comes from the old root octo meaning 'eight', the same 'octo' you see in words like octagon and octopus. So octonary simply means 'a set of eight' or 'the number eight', which is why it names groups or systems with eight parts.