Standard Lemma guide

octal

adj · noun · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • UK: /ˈɒk.təl/
  • US: Recorded audio is listed in the source snapshot.

1

adj

Meaning 1

Concerning numbers expressed in octal or mathematical calculations performed using octal.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: arithmetic, computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The number system that uses the eight digits 0, 1, 2, 3, 4, 5, 6, 7.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: arithmetic, computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A digit or value in the octal number system.

Definition source: English Wiktionary via Wiktextract

Usage: countable

Topics: arithmetic, computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adjective

Meaning 4

of or pertaining to a number system having 8 as its base

Definition source: Princeton WordNet 3.0

Examples

  • an octal digit

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From oct- + -al.

Across languages

Translations

18 source translations are retained for this English entry.

  • Armenian: ութական (utʻakan) — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Chinese Mandarin: 八進制 /八进制 (bājìnzhì) — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Czech: osmičkový — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Esperanto: okuma — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Finnish: oktaalinen — concerning numbers expressed in octal or mathematics calculations performed using octal
  • German: Oktal- — concerning numbers expressed in octal or mathematics calculations performed using octal
  • German: Achter- — concerning numbers expressed in octal or mathematics calculations performed using octal
  • German: oktal — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Greek: οκταδικός (oktadikós) — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Hindi: अष्टाधारी (aṣṭādhārī) — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Hungarian: oktális — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Hungarian: nyolcas — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Italian: ottale — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Polish: ósemkowy — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Romanian: octal — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Russian: восьмери́чный (vosʹmeríčnyj) — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Thai: อัฐนิยม — concerning numbers expressed in octal or mathematics calculations performed using octal
  • Turkish: sekizli — concerning numbers expressed in octal or mathematics calculations performed using octal