Standard Lemma guide

borax

noun · verb · 5 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.

  • /ˈbɔː.ɹæks/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • US: /ˈbɔɹ.æks/
  • rhymes with -ɔːɹæks
  • CMU ARPABET: B AO1 R AE2 K S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A white or gray/grey crystalline salt, found in nature as a mineral, with a slight alkaline taste, used as a flux, in soldering metals, making enamels, fixing colors/colours on porcelain, and as a soap, etc.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The sodium salt of boric acid, Na2B4O7, either anhydrous or with 5 or 10 molecules of water of crystallization.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

Topics: chemistry, inorganic-chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: sodium tetraborate, mul:E285

Antonyms: none provided

Broader terms: borate, compound, substance, stuff

3

noun

Meaning 3

Cheap or tawdry furniture or other works of industrial design.

Definition source: English Wiktionary via Wiktextract

Usage: attributive, sometimes, uncountable, usually

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

verb

Meaning 4

To treat with borax.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

an ore of boron consisting of hydrated sodium borate; used as a flux or cleansing agent

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: mineral

History

Etymology

Etymology tree Middle Persian *bōragbor. Arabic بَوْرَق (bawraq)der. Medieval Latin boraxder. Anglo-Norman boreisbor. Middle English boras English borax From Middle English boras, from Anglo-Norman boreis, from Medieval Latin borax, baurach (“borax”), from Arabic بَوْرَق (bawraq), from Middle Persian bwlk' (bōrag), which yielded Persian بوره (bure).

Across languages

Translations

43 source translations are retained for this English entry.

  • Acehnese: peuja — crystalline salt
  • Albanian: boraks — crystalline salt
  • Arabic: بَوْرَق (bawraq) — crystalline salt
  • Armenian: բորակ (borak) — crystalline salt
  • Burmese: လက်ချား (lakhkya:) — crystalline salt
  • Catalan: bòrax — crystalline salt
  • Esperanto: borakso — crystalline salt
  • Estonian: booraks — crystalline salt
  • Finnish: booraksi — crystalline salt
  • French: borax — crystalline salt
  • German: Borax — crystalline salt
  • Hindi: सुहागा (suhāgā) — crystalline salt
  • Hungarian: bórax — crystalline salt
  • Ido: sodoborato — crystalline salt
  • Indonesian: boraks — crystalline salt
  • Indonesian: bleng — crystalline salt
  • Indonesian: pijer — crystalline salt
  • Indonesian: cetitet — crystalline salt
  • Irish: bórás — crystalline salt
  • Italian: borace — crystalline salt
  • Japanese: ホウ砂 (hōsha) — crystalline salt
  • Japanese: 硼砂 (hōsha) — crystalline salt
  • Javanese: bleng — crystalline salt
  • Javanese: cetitèt — crystalline salt
  • Kyrgyz: бура (bura) — crystalline salt
  • Latin: santerna — crystalline salt
  • Persian: بوره (bure) — crystalline salt
  • Polish: boraks — crystalline salt
  • Portuguese: bórax — crystalline salt
  • Romanian: borax — crystalline salt
  • Romanian: borat de sodiu — crystalline salt
  • Russian: бура́ (burá) — crystalline salt
  • Serbo-Croatian: boraks — crystalline salt
  • Spanish: bórax — crystalline salt
  • Spanish: borraj — crystalline salt
  • Sundanese: pijer — crystalline salt
  • Tagalog: pinse — crystalline salt
  • Turkish: boraks — crystalline salt
  • Vietnamese: hàn the — crystalline salt
  • Finnish: booraksi — (chemistry) Na2B4O7
  • French: borax — (chemistry) Na2B4O7
  • Irish: bórás — (chemistry) Na2B4O7
  • Polish: boraks — (chemistry) Na2B4O7