'Carnallite' definitions:

Definition of 'carnallite'

From: WordNet
noun
A white or reddish mineral consisting of hydrous chlorides of potassium and magnesium; used as a fertilizer and as a source of potassium and magnesium

Definition of 'Carnallite'

From: GCIDE
  • Carnallite \Car"nal*lite\, n. [G. carnallit, fr. Von Carnall, a Prussian.] (Min.) A hydrous chloride of potassium and magnesium, sometimes found associated with deposits of rock salt. [1913 Webster]