borax

noun (1)
bo·​rax | \ˈbȯr-ˌaks, -əks \

Definition of borax 

(Entry 1 of 2)

: a white crystalline compound that consists of a hydrated sodium borate Na2B4O7·10H2O, that occurs as a mineral or is prepared from other minerals, and that is used especially as a flux, cleansing agent, and water softener, as a preservative, and as a fireproofing agent

borax

noun (2)

Definition of borax (Entry 2 of 2)

: cheap shoddy merchandise

What are the Uses of borax?

A borate of sodium that occurs as a soft, light, colorless crystalline mineral, borax has a wide variety of uses. It can be used as a component of glass and pottery glazes in the ceramics industry, as a solvent in metallurgy, as a flux in welding and soldering, and as a fertilizer additive, a soap supplement, a disinfectant, a mouthwash, and a water softener. About 50 percent of the world’s supply comes from southern Californian deserts, including Death Valley.

First Known Use of borax

Noun (1)

14th century, in the meaning defined above

Noun (2)

1932, in the meaning defined above

History and Etymology for borax

Noun (1)

Middle English boras, from Anglo-French boreis, from Medieval Latin borac-, borax, from Arabic būraq, from Persian būrah

Noun (2)

origin unknown

Keep scrolling for more

Learn More about borax

Statistics for borax

Look-up Popularity

Time Traveler for borax

The first known use of borax was in the 14th century

See more words from the same century

Keep scrolling for more

More Definitions for borax

borax

noun
bo·​rax | \ˈbō(ə)r-ˌaks, ˈbȯ(ə)r-, -əks\

Medical Definition of borax 

: a white crystalline compound that consists of a hydrated sodium borate Na2B4O7·10H2O, that occurs as a mineral or is prepared from other minerals, and that is used especially as a flux, cleansing agent, and water softener and as a preservative

Keep scrolling for more

More from Merriam-Webster on borax

Rhyming Dictionary: Words that rhyme with borax

Spanish Central: Translation of borax

Nglish: Translation of borax for Spanish Speakers

Britannica.com: Encyclopedia article about borax

Comments on borax

What made you want to look up borax? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

amusing and light sparring with words

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!