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n. Symbol K
A soft, silver-white, extremely reactive element that is an alkali metal, is essential to plant and animal cell functions, and occurs in nature only in compounds. It can be obtained by electrolysis of its hydroxide and is found in, or converted to, a wide variety of salts used especially in fertilizers and soaps. Atomic number 19; atomic weight 39.098; melting point 63.5°C; boiling point 759°C; specific gravity 0.86; valence 1. See Periodic Table.

[From earlier potass, potash (from which it was first obtained), from French potasse, from Dutch potas : pot, pot (from Middle Dutch; akin to Old English pott) + as, ash (from Middle Dutch asche; see as- in Indo-European roots).]

po·tas′sic adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(pəˈtæs ɪk)

of, pertaining to, or containing potassium.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


adj (Chem) → Kalium-, Kali-
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in periodicals archive ?
Chalcopyrite, pyrite, and sphalerite mineralization with potassic altered syenite clasts of a hydrothermal breccia at 'Green Rock'; a new showing ~175m south of drill pad 'C-2' along the Burgundy Ridge Trend.
Chalcopyrite, pyrite, and sphalerite mineralization with potassic altered syenite clasts of a hydrothermal breccia at "Green Rock"; a new showing ~175m south of drill pad "C-2" along the Burgundy Ridge Trend.
The integrated information allows for Argent to vector more efficiently towards a potassic altered centre of a mineralised system.
"Improving rainfall, brimming dams, favourable raw material prices coupled with recent government initiatives such as increased budgetary allocation for phosphatic and potassic subsidies and desire for Direct Benefit Transfer (DBT 2.0) of fertiliser subsidy are expected to provide the much-needed impetus to the sector," he added.
The nearest four holes on the Canadian Creek Property to Casino have moderate potassic alteration to strong propylitic alteration, leach capping or incipient leaching, weak enrichment and hypogene copper-gold-molybdenum mineralization, which are typical of that occurring at the outer edges of a porphyry copper - gold - molybdenum deposit.
The committee had recommended that the fuel adjustment charges be abolished on electricity, two per cent GST on fertiliser be waived, instead 3pc tax on imported fertiliser was imposed which results in rise of Rs100 for DAP and Rs120 for Potassic fertilisers,' he said.
Thus, the evaluation of the microbial activity in saline soils is of great relevance, being helpful in the management of the potassic fertilization and improving the quality of the soil and overall productivity.
The radiometric survey is particularly well suited for potassic alteration mapping and lithological contrast.
The granodiorite is of white-green colour containing 30% white quartz crystals, 45% potassic feldspar and 25% biotite.
All porphyry alteration facies have been described, including zones of potassic, advanced argillic, and phyllic zones.
At depth in the BEP, large clasts of potassic altered (biotite, potassic feldspar and magnetite) diorite porphyry with intense stockwork chalcopyrite-bornite mineralisation occur within a diatreme breccia and are interpreted to have been transported from a high-grade potassic core at depth.