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adjective Geology.
  1. (of igneous rock) containing a relatively high percentage of sodium and potassium alkali.

Origin of alkalic

1725–35, in sense “alkaline;” alkal(i) + -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for alkalic

Historical Examples

  • The tool N was used in refining their alkalic salts, and served to take off the salt as crystallized in course of its manufacture.

    Reminiscences of Glass-making

    Deming Jarves

British Dictionary definitions for alkalic


  1. (of igneous rocks) containing large amounts of alkalis, esp sodium and potassium
  2. another word for alkaline
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