Standard Lemma guide

Boolean

adj · noun · 6 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • UK: /ˈbuːl.i.ən/
  • UK: /buːˈli.ən/
  • UK: Recorded audio is listed in the source snapshot.
  • General-American: bo͞oʹliən
  • General-American: bo͞oliʹən
  • General-American: /ˈbuli.ən/
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -uːliən
  • US: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: B UW0 L IY1 AH0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Of or pertaining to the work of George Boole.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Pertaining to data items that can have “true” and “false” (or, equivalently, 1 and 0 respectively) as their only possible values and to operations on such values.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: computing, engineering, human-sciences, logic, mathematics, natural-sciences, philosophy, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Alternative letter-case form of Boolean.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of, not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

A variable that can hold a single true/false (1/0) value.

Definition source: English Wiktionary via Wiktextract

Topics: computing, engineering, human-sciences, logic, mathematics, natural-sciences, philosophy, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

Alternative letter-case form of Boolean.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

adjective

Meaning 6

of or relating to a combinatorial system devised by George Boole that combines propositions with the logical operators AND and OR and IF THEN and EXCEPT and NOT

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From Boole + -ean, named after English mathematician, philosopher and logician George Boole (1815–1864).

Across languages

Translations

42 source translations are retained for this English entry.

  • Catalan: booleà — logic: pertaining to data items that have values “true” and “false”
  • Czech: booleovský — logic: pertaining to data items that have values “true” and “false”
  • Dutch: booleaans — logic: pertaining to data items that have values “true” and “false”
  • Esperanto: bulea — logic: pertaining to data items that have values “true” and “false”
  • Finnish: totuusarvoinen — logic: pertaining to data items that have values “true” and “false”
  • French: booléen — logic: pertaining to data items that have values “true” and “false”
  • French: boolien — logic: pertaining to data items that have values “true” and “false”
  • German: boolesch — logic: pertaining to data items that have values “true” and “false”
  • Italian: booleano — logic: pertaining to data items that have values “true” and “false”
  • Japanese: ブール代数の (Būru-daisū no) — logic: pertaining to data items that have values “true” and “false”
  • Korean: 불 대수의 (bul daesu-ui) — logic: pertaining to data items that have values “true” and “false”
  • Korean: 부울 대수의 (buul daesu-ui) — logic: pertaining to data items that have values “true” and “false”
  • Macedonian: булов (bulov) — logic: pertaining to data items that have values “true” and “false”
  • Polish: boolowski — logic: pertaining to data items that have values “true” and “false”
  • Portuguese: booleano — logic: pertaining to data items that have values “true” and “false”
  • Romanian: boolean — logic: pertaining to data items that have values “true” and “false”
  • Russian: бу́лев (búlev) — logic: pertaining to data items that have values “true” and “false”
  • Spanish: booleano — logic: pertaining to data items that have values “true” and “false”
  • Swedish: boolesk — logic: pertaining to data items that have values “true” and “false”
  • Turkish: Boole'ca — logic: pertaining to data items that have values “true” and “false”
  • Turkish: Boole'sal — logic: pertaining to data items that have values “true” and “false”
  • Vietnamese: luận lý — logic: pertaining to data items that have values “true” and “false”
  • Vietnamese: luận lí — logic: pertaining to data items that have values “true” and “false”
  • Vietnamese: (thuộc) Boole — logic: pertaining to data items that have values “true” and “false”
  • Vietnamese: Boolean — logic: pertaining to data items that have values “true” and “false”
  • Chinese Mandarin: 布爾值 /布尔值 (Bù'ěr zhí) — type of variable
  • Dutch: booleaanse waarde — type of variable
  • Finnish: totuusarvomuuttuja — type of variable
  • French: variable booléenne — type of variable
  • German: Boolean — type of variable
  • German: boolsche Variable — type of variable
  • Japanese: ブーリアン (Būrian) — type of variable
  • Japanese: ブール値 (Būru-chi) — type of variable
  • Korean: 불리언 (bullieon) — type of variable
  • Korean: 부울 값 (buul gap) — type of variable
  • Polish: zmienna logiczna — type of variable
  • Portuguese: booleano — type of variable
  • Russian: бу́лева переме́нная (búleva pereménnaja) — type of variable
  • Spanish: booleano — type of variable
  • Swedish: boolesk variabel — type of variable
  • Turkish: Boole değişkeni — type of variable
  • Welsh: Boole — type of variable
Real reading context

Boolean in complete knowledge articles