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rock salt

American  

noun

  1. common salt occurring in extensive, irregular beds in rocklike masses.


rock salt British  

noun

  1. another name for halite

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of rock salt

First recorded in 1700–10

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The winter storm that sent Americans scurrying to buy snowblowers, shovels, and rock salt now has them in a deep freeze.

From Barron's Jan. 27, 2026

To stabilize these ceramics, manganese and iron atoms must remain in the 2+ oxidation state, forming what is known as a rock salt structure where each atom bonds with only two oxygen atoms.

From Science Daily Dec. 4, 2025

It also warns owners to wash their paws thoroughly after walking in areas that may have been gritted with rock salt, which can be poisonous to pets.

From BBC Jan. 17, 2024

Supplies of rock salt and snow shovels were flying off shelves on Tuesday at Rocky's Ace Hardware in Worcester, Massachusetts, west of Boston, said the manager, Joshua Rivera.

From Reuters Mar. 15, 2023

The shovel and bag of rock salt were right where he remembered.

From "The Dead and the Gone" by Susan Beth Pfeffer

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