potassicadj.

Brit.

/pəˈtasɪk/, U.S.

/pəˈtæsɪk/

Origin: Formed within English, by derivation; perhaps modelled on a French lexical item, or perhaps modelled on a Latin lexical item. Etymons: potassa n., potassium n., -ic suffix.

Etymology: < either potassa n. or potassium n. + -ic suffix, perhaps after French potassique (1826), post-classical Latin potassicus.

1. Chemistry. Containing potassium; Agriculture (of a manure or fertilizer) providing a source of potash.Now disused in names of chemical compounds.

ΘΚΠ

the world > matter > chemistry > elements and compounds > metals > specific elements > potassium > [adjective]

potassic1853

1853 T. F. Betton tr. V. Regnault Elements Chem. (ed. 2) II. 348 By decomposing the double potassic chloride by heat, there is less fear of the platinum being carried off by the gases.

1881 R. Warington Chem. of Farm iii. 36 The residues of phosphatic and potassic manures are available for subsequent crops, but are distinctly less active than fresh applications.

1906 Westm. Gaz. 7 Apr. 2/2 The Prussian Government..is a member of another ‘Kartell’—that controlling the supplies of potassic salts.

1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) iv. 92 Concentrated nitric acid or potassic permanganate oxidizes the sulphides or sulphoxides to sulphones.

1952 Internat. Affairs 28 20 By far the most hopeful means of increasing yields per acre is by the use of fertilizers, chiefly nitrogenous, in many cases phosphatic, but rarely potassic or lime.

1992 Sunday Observer (Sri Lanka) 6 Sept. (New Delhi ed.) (Colour Mag.) 10/2 The spectre of artificial shortages of fertilisers may also have to be faced..as a result of the complete decontrol of phosphatic and potassic fertilisers.

2. Geology. Of a mineral or rock: containing an appreciable or a greater than average quantity of potassium, often as compared with sodium. Also: designating a metamorphic process in which such minerals are formed.

ΘΚΠ

the world > the earth > structure of the earth > formation of features > metamorphism > [adjective]

metamorphic1833

thermo-metamorphic1889

post-metamorphic1900

potassic1902

sodic1902

katamorphic1904

symphrattic1904

retrogressive1930

retrograde1932

Scourian1950

the world > the earth > minerals > mineral structure or appearance > [adjective] > sodic, potassic, or mafic

potassic1902

sodic1902

sodipotassic1902

mafic1912

the world > the earth > structure of the earth > constituent materials > rock > mineral or chemical composition > [adjective] > containing specific mineral

siliceous1656

auriferous1744

siliciferous1794

silicited1794

talcose1794

aluminiferous1804

silicated1806

venigenous1817

stanniferous1823

alumiferous1826

quartziferous1831

quartzofeldspathic1839

stannified1855

tinnified1855

acidic1876

lime-silicate1888

peralkalic1902

potassic1902

sodic1902

sodipotassic1902

felsic1912

peralkaline1913

peraluminous1927

1902 Jrnl. Geol. (Chicago) 10 648 Nephelite is more frequently associated with orthoclase than leucite with albite, from which it appears that potassic feldspathic molecules become polysilicate when sodic ones form orthosilicate.

1932 A. Johannsen Descr. Petrogr. Igneous Rocks II. 63 The term orthorhyolite was originally suggested in 1919 for rhyolites whose only feldspar is potassic.

1967 Amer. Mineralogist 52 828 The early part of the alteration sequence featured chiefly potassic metasomatism (biotite, potash feldspar), whereas the latter part was characterized by sodic metasomatism (aegirine, crocidolite).

1988 Nature 22 Sept. 343/1 These minerals..commonly are surrounded by large sodic or potassic ferritization halos.

This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).

单词	potassic
释义	potassicadj. Brit. /pəˈtasɪk/, U.S. /pəˈtæsɪk/ Origin: Formed within English, by derivation; perhaps modelled on a French lexical item, or perhaps modelled on a Latin lexical item. Etymons: potassa n., potassium n., -ic suffix. Etymology: < either potassa n. or potassium n. + -ic suffix, perhaps after French potassique (1826), post-classical Latin potassicus. 1. Chemistry. Containing potassium; Agriculture (of a manure or fertilizer) providing a source of potash.Now disused in names of chemical compounds. ΘΚΠ the world > matter > chemistry > elements and compounds > metals > specific elements > potassium > [adjective] potassic1853 1853 T. F. Betton tr. V. Regnault Elements Chem. (ed. 2) II. 348 By decomposing the double potassic chloride by heat, there is less fear of the platinum being carried off by the gases. 1881 R. Warington Chem. of Farm iii. 36 The residues of phosphatic and potassic manures are available for subsequent crops, but are distinctly less active than fresh applications. 1906 Westm. Gaz. 7 Apr. 2/2 The Prussian Government..is a member of another ‘Kartell’—that controlling the supplies of potassic salts. 1922 J. J. Sudborough Bernthsen's Text-bk. Org. Chem. (new ed.) iv. 92 Concentrated nitric acid or potassic permanganate oxidizes the sulphides or sulphoxides to sulphones. 1952 Internat. Affairs 28 20 By far the most hopeful means of increasing yields per acre is by the use of fertilizers, chiefly nitrogenous, in many cases phosphatic, but rarely potassic or lime. 1992 Sunday Observer (Sri Lanka) 6 Sept. (New Delhi ed.) (Colour Mag.) 10/2 The spectre of artificial shortages of fertilisers may also have to be faced..as a result of the complete decontrol of phosphatic and potassic fertilisers. 2. Geology. Of a mineral or rock: containing an appreciable or a greater than average quantity of potassium, often as compared with sodium. Also: designating a metamorphic process in which such minerals are formed. ΘΚΠ the world > the earth > structure of the earth > formation of features > metamorphism > [adjective] metamorphic1833 thermo-metamorphic1889 post-metamorphic1900 potassic1902 sodic1902 katamorphic1904 symphrattic1904 retrogressive1930 retrograde1932 Scourian1950 the world > the earth > minerals > mineral structure or appearance > [adjective] > sodic, potassic, or mafic potassic1902 sodic1902 sodipotassic1902 mafic1912 the world > the earth > structure of the earth > constituent materials > rock > mineral or chemical composition > [adjective] > containing specific mineral siliceous1656 auriferous1744 siliciferous1794 silicited1794 talcose1794 aluminiferous1804 silicated1806 venigenous1817 stanniferous1823 alumiferous1826 quartziferous1831 quartzofeldspathic1839 stannified1855 tinnified1855 acidic1876 lime-silicate1888 peralkalic1902 potassic1902 sodic1902 sodipotassic1902 felsic1912 peralkaline1913 peraluminous1927 1902 Jrnl. Geol. (Chicago) 10 648 Nephelite is more frequently associated with orthoclase than leucite with albite, from which it appears that potassic feldspathic molecules become polysilicate when sodic ones form orthosilicate. 1932 A. Johannsen Descr. Petrogr. Igneous Rocks II. 63 The term orthorhyolite was originally suggested in 1919 for rhyolites whose only feldspar is potassic. 1967 Amer. Mineralogist 52 828 The early part of the alteration sequence featured chiefly potassic metasomatism (biotite, potash feldspar), whereas the latter part was characterized by sodic metasomatism (aegirine, crocidolite). 1988 Nature 22 Sept. 343/1 These minerals..commonly are surrounded by large sodic or potassic ferritization halos. This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022). < adj.1853
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