rock salt


Definition of rock salt

: common salt occurring in solid form as a mineral also : salt artificially prepared in large crystals or masses

Examples of rock salt in a Sentence

I put some rock salt on the sidewalk to melt the ice.
Recent Examples on the Web Along with lemon drops, experts also say eating red onion with rock salt is not a treatment or cure for COVID-19. Mckenzie Sadeghi, USA TODAY, 31 May 2021 The new systems manufacture chlorine with a process of (rock salt) and electricity. Kimi Robinson, The Arizona Republic, 14 May 2021 But the Goop experience for those who cannot afford it (most people) is essentially harmless, a benign spectacle to be taken with a large pinch of pink Himalayan rock salt. Raven Smith, Vogue, 13 May 2021 Recent opportunities include the purchase of the salt brine equipment that replaced traditional rock salt at roughly 25% the cost. Steve Schering,, 9 Mar. 2021 Dave Parker, a spokesman for the Arkansas Department of Transportation, said temperatures Monday were too cold for rock salt and brine to work well on roadways, so workers concentrated on plowing the snow from interstates and state highways. Teresa Moss, Arkansas Online, 16 Feb. 2021 If ice has already built up, use calcium chloride or urea to melt the dam, not rock salt, experts say. Detroit Free Press, 23 Feb. 2021 Dave Parker, a spokesman for the Arkansas Department of Transportation, said workers on Tuesday were plowing main highways down to 1 or 2 inches of snow, then applying rock salt or brine to facilitate melting. Tom Sissom, Arkansas Online, 17 Feb. 2021 Avery Island was the first rock salt mine in the U.S. Kristen Leigh Painter, Star Tribune, 28 Jan. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rock salt.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of rock salt

1693, in the meaning defined above

Keep scrolling for more

Learn More About rock salt

Time Traveler for rock salt

Time Traveler

The first known use of rock salt was in 1693

See more words from the same year

Statistics for rock salt

Last Updated

7 Jun 2021

Cite this Entry

“Rock salt.” Dictionary, Merriam-Webster, Accessed 18 Jun. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for rock salt

rock salt


English Language Learners Definition of rock salt

: salt that is in the form of large pieces or crystals

rock salt


Kids Definition of rock salt

: common salt in large crystals

More from Merriam-Webster on rock salt

Nglish: Translation of rock salt for Spanish Speakers Encyclopedia article about rock salt


Test Your Vocabulary

Name that Thing: Dog Breeds

True or False

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

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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