Know how to use "fewer" and "less"? Find out.


[kahy-nahyt, key-] /ˈkaɪ naɪt, ˈkeɪ-/
a mineral, hydrous sulfate of magnesium and potassium chloride, occurring in granular crystalline masses, a source of potassium salts.
1865-70; < German Kainit. See caino-, -ite1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
British Dictionary definitions for kainite


a white mineral consisting of potassium chloride and magnesium sulphate: a fertilizer and source of potassium salts. Formula: KCl.MgSO4.3H2O
Word Origin
C19: from German Kainit, from Greek kainos new + -ite1
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
Cite This Source
Encyclopedia Article for kainite

a naturally occurring double salt, hydrated potassium and magnesium sulfate-chloride, KMgSO4Cl3H2O. It has been found only in potash deposits and is the principal constituent of the large salt deposits in middle and northern Germany. Water decomposes kainite to epsomite and sylvite. For chemical formula and detailed physical properties, see sulfate mineral (table)

Learn more about kainite with a free trial on
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Difficulty index for kainite

Few English speakers likely know this word

Word Value for kainite

Scrabble Words With Friends

Nearby words for kainite