saltstone

English

Alternative forms

• salt stone

Etymology

From Middle English saltstone, salteston, salt stan, from Old English sealtstān (“rock salt, niter”), from Proto-West Germanic *saltastain, equivalent to salt +‎ stone.

Noun

saltstone (countable and uncountable, plural saltstones)

1. (geology) Salt that has accumulated and hardened into a rocklike consistency.
   • 1991, Long-lived Legacy:

     The amount of saltstone to be produced at Savannah River is very large, about 3 million tons over 28 years; […]

   • 2009, Advice on the Department of Energy's Cleanup Technology:

     Salt waste in the tanks at SRS is to be processed and the resulting LAW incorporated into a grout called saltstone; […]

See also

• rock salt