borax: meaning, definition, pronunciation and examples

C1
UK/ˈbɔː.ræks/US/ˈbɔːr.æks/

Technical (chemistry, cleaning); Informal/Archaic (US furniture trade)

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Quick answer

What does “borax” mean?

A white mineral compound of boron, used as a cleaning agent, flux in metallurgy, and insecticide.

Audio

Pronunciation

Definition

Meaning and Definition

A white mineral compound of boron, used as a cleaning agent, flux in metallurgy, and insecticide.

Informal term for cheap, showy goods, especially furniture (US, dated).

Dialectal Variation

British vs American Usage

Differences

The chemical meaning is identical. The informal 'cheap furniture' sense is almost exclusively historical American usage.

Connotations

In technical contexts, neutral. In historical US slang, connotes poor quality and deception.

Frequency

Much more frequent in technical/scientific contexts. The informal meaning is now rare.

Grammar

How to Use “borax” in a Sentence

N (count/uncount)NP (borax + noun)

Vocabulary

Collocations

strong
powdered boraxborax solutionuse borax
medium
dissolve boraxadd boraxborax and water
weak
clean with boraxnatural boraxborax deposits

Examples

Examples of “borax” in a Sentence

verb

British English

  • The recipe instructs you to borax the wood to prevent insect damage. (rare/technical)

adjective

British English

  • The borax content of the soil was analysed. (attributive use)

American English

  • They sold borax furniture on the roadside. (dated, attributive)

Usage

Meaning in Context

Business

Rare, except in chemical supply/manufacturing industries.

Academic

Common in chemistry, geology, and materials science texts.

Everyday

Found in DIY cleaning or crafting guides. Not a common household term.

Technical

Standard term for the compound Na₂B₄O₇·10H₂O or related anhydrous forms.

Vocabulary

Synonyms of “borax”

Strong

cleaning agent (context-specific)

Neutral

sodium boratedisodium tetraborate

Weak

detergent boosterwater softener

Vocabulary

Antonyms of “borax”

dirtystain (in cleaning context)

Watch out

Common Mistakes When Using “borax”

  • Pronouncing it /bəˈræks/ (incorrect). Correct is /ˈbɔːr.æks/.
  • Using 'borax' as a general term for all cleaning powders.
  • Confusing borax (sodium borate) with baking soda (sodium bicarbonate).

FAQ

Frequently Asked Questions

It must be used with caution. It is toxic if ingested and can irritate skin and lungs. Always follow safety instructions.

Borax (sodium borate) is a mineral compound. Baking soda (sodium bicarbonate) is a different chemical salt. They have different cleaning properties and safety profiles.

Yes, borax is a naturally occurring mineral, often harvested from dried lake beds in arid regions.

It originated in late 19th/early 20th century US commerce, where borax was cheap and sometimes used in deceptive sales practices for inferior goods.

A white mineral compound of boron, used as a cleaning agent, flux in metallurgy, and insecticide.

Borax: in British English it is pronounced /ˈbɔː.ræks/, and in American English it is pronounced /ˈbɔːr.æks/. Tap the audio buttons above to hear it.

Phrases

Idioms & Phrases

  • 20 Mule Team Borax (brand/trademark, US)

Learning

Memory Aids

Mnemonic

BORAX rhymes with 'door wax' – think of a white powder you might use to clean the floor.

Conceptual Metaphor

NOT APPLICABLE (primarily technical term).

Practice

Quiz

Fill in the gap
For a natural cleaning alternative, you can make a paste with and water.
Multiple Choice

In a historical US context, 'borax' could refer to: