acidicadj.

Brit.

/əˈsɪdɪk/, U.S.

/əˈsɪdɪk/,

/æˈsɪdɪk/

Origin: Formed within English, by derivation. Etymons: acid n., -ic suffix.

Etymology: < acid n. + -ic suffix. Compare earlier acid adj., acidy adj.

a. Chiefly Geology. Of a chemical element: that combines with oxygen or sulphur to form a salt or salt-like compound with a basic element. Cf. acidific adj. 2.Applied esp. to silicon as a component of silicates.

ΚΠ

1868 J. D. Dana Syst. Mineral. (ed. 5) Introd. p. xv Ternary compounds (called also salts and double binaries) consist of elements of three kinds, (1) basic, (2) acidic, (3) acidific. Thus..sulphate of lead contains (1) lead, (2) sulphur, (3) oxygen; the sulphantimonite, jamesonite, contains (1) lead and iron, (2) antimony, (3) sulphur.

1918 Science 4 Jan. 13/2 All the hydrous oxides of the basic or acidic elements act similar to hydrous ferric oxide.

2005 Sedimentary Geol. 173 77 (caption) Multi-element plots..of selected major and minor elements, showing ‘acidic elements’ i.e. those associated with acidic rock types on the left and ‘basic elements’..on the right.

b. Geology. Of igneous rock: relatively rich in silica. Cf. acid adj. 4a.

ΘΚΠ

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

1876 Proc. Amer. Philos. Soc. 1874–5 14 402 All igneous rocks..may be divided into those poor in Silica or Basic, or those rich in Silica or Acidic.

1929 G. P. Merrill Minerals from Earth & Sky i. v. 69 There have thus far been found among meteorites, no rocks resembling granite and the more acidic igneous rocks.

1990 P. Kearey & F. J. Vine Global Tectonics xi. 259 Increased heat flow might have led to..the ascent of considerable quantities of acidic magma.

2. Chemistry. Of, relating to, or characteristic of an acid; having the properties of or containing an acid; having a pH of less than 7; = acid adj. 2a, 3.

ΘΚΠ

the world > matter > chemistry > chemical substances > acids > [adjective] > relating to acids general

acid1651

acidic1873

1873 Chem. News 2 May 221/1 These groups are, as is well known, the alkaline or basic, the acidic, and the neutral, and properly prepared test-paper indicates the one to which any particular substance belongs.

1905 Harmsworth Encycl. II. 1162/2 Though neutral to litmus, carbon disulphide exhibits some acidic properties, uniting with alkaline sulphides to form sulpho-carbonates.

1925 Jrnl. Chem. Soc. 127 i. 1383 The addition to another part of the molecule of a proton..from some acidic or proton-donating component of the system.

1934 C. C. Steele Introd. Plant Biochem. vi. xix. 200 Concentrated hydrochloric acid removes only the phytol, giving an acidic substance phæophorbide a.

1955 J. C. Giblin Qualitative & Volumetric Anal. (ed. 2) i. 18 Add hydrochloric acid until the solution is slightly acidic, then two drops of the dye.

1978 Cornish Guardian 27 Apr. 3/7 (advt.) Unipart oil..contains all the necessary additives to take care of the harmful acidic impurities which gather in an engine.

1998 Your Garden Oct. 16/2 If you see heathers and gorse then it is likely that your soil is acidic.

2005 Nature 25 Aug. 1101/1 The archaeal virus was discovered in an acidic hot spring..at Pozzuoli, Italy.

3. figurative.

a. With reference to speech: cutting, acerbic, bitter.

ΘΚΠ

the world > action or operation > behaviour > bad behaviour > harshness or severity > [adjective] > specifically of actions or utterances

stern?c1225

sore1526

severe1561

savage1821

acidic1936

1936 C. G. Bowers Jefferson in Power v. 111 No human being ever was a greater master of vituperation, and none ever had a greater vocabulary of acidic words.

1954 Jrnl. Southern Hist. 20 122 Motte makes acute and invariably acidic comments on the manners, customs, houses,..and appearance of the denizens of the regions he traversed.

1965 Washington Post 17 Jan. g1/2 Menotti himself has been vocally acidic about the school over the years.

1984 National Times (Sydney) 9 Mar. 18/1 Last month in Parliament he spat out a string of acidic references to her as ‘this whited sepulchre’, ‘this scion of society’ and as a member of the ‘silvertailed aristocracy’.

2004 Time Out N.Y. 14 Oct. 109/1 The filmmaker didn't think that anybody would mistake him for the movie's Gothamite with a gift for acidic gab.

b. Strikingly bright, intense, or gaudy in colour.

ΚΠ

1971 M. Tucker Structure of Color 7/2 An ‘acidic’ yellow, ‘lime’ green, ‘sour’ orange, ‘creamy’ beige, [etc.].

1983 N.Y. Times (Nexis) 27 Mar. ii. 32 They come in four acidic shades—red, blue, green and yellow.

1995 Evening Standard (Nexis) 4 July 38 [He] is no stranger to the ‘classic with a twist’ world of acidic shirts.

2005 D. Hornung Colour vii. 121 The only prismatic colors are a yellow, which spreads out into a luminous pastel yellow tint, and a particularly acidic scarlet.

This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).

单词	acidic
释义	acidicadj. Brit. /əˈsɪdɪk/, U.S. /əˈsɪdɪk/, /æˈsɪdɪk/ Origin: Formed within English, by derivation. Etymons: acid n., -ic suffix. Etymology: < acid n. + -ic suffix. Compare earlier acid adj., acidy adj. 1. a. Chiefly Geology. Of a chemical element: that combines with oxygen or sulphur to form a salt or salt-like compound with a basic element. Cf. acidific adj. 2.Applied esp. to silicon as a component of silicates. ΚΠ 1868 J. D. Dana Syst. Mineral. (ed. 5) Introd. p. xv Ternary compounds (called also salts and double binaries) consist of elements of three kinds, (1) basic, (2) acidic, (3) acidific. Thus..sulphate of lead contains (1) lead, (2) sulphur, (3) oxygen; the sulphantimonite, jamesonite, contains (1) lead and iron, (2) antimony, (3) sulphur. 1918 Science 4 Jan. 13/2 All the hydrous oxides of the basic or acidic elements act similar to hydrous ferric oxide. 2005 Sedimentary Geol. 173 77 (caption) Multi-element plots..of selected major and minor elements, showing ‘acidic elements’ i.e. those associated with acidic rock types on the left and ‘basic elements’..on the right. b. Geology. Of igneous rock: relatively rich in silica. Cf. acid adj. 4a. ΘΚΠ 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 1876 Proc. Amer. Philos. Soc. 1874–5 14 402 All igneous rocks..may be divided into those poor in Silica or Basic, or those rich in Silica or Acidic. 1929 G. P. Merrill Minerals from Earth & Sky i. v. 69 There have thus far been found among meteorites, no rocks resembling granite and the more acidic igneous rocks. 1990 P. Kearey & F. J. Vine Global Tectonics xi. 259 Increased heat flow might have led to..the ascent of considerable quantities of acidic magma. 2. Chemistry. Of, relating to, or characteristic of an acid; having the properties of or containing an acid; having a pH of less than 7; = acid adj. 2a, 3. ΘΚΠ the world > matter > chemistry > chemical substances > acids > [adjective] > relating to acids general acid1651 acidic1873 1873 Chem. News 2 May 221/1 These groups are, as is well known, the alkaline or basic, the acidic, and the neutral, and properly prepared test-paper indicates the one to which any particular substance belongs. 1905 Harmsworth Encycl. II. 1162/2 Though neutral to litmus, carbon disulphide exhibits some acidic properties, uniting with alkaline sulphides to form sulpho-carbonates. 1925 Jrnl. Chem. Soc. 127 i. 1383 The addition to another part of the molecule of a proton..from some acidic or proton-donating component of the system. 1934 C. C. Steele Introd. Plant Biochem. vi. xix. 200 Concentrated hydrochloric acid removes only the phytol, giving an acidic substance phæophorbide a. 1955 J. C. Giblin Qualitative & Volumetric Anal. (ed. 2) i. 18 Add hydrochloric acid until the solution is slightly acidic, then two drops of the dye. 1978 Cornish Guardian 27 Apr. 3/7 (advt.) Unipart oil..contains all the necessary additives to take care of the harmful acidic impurities which gather in an engine. 1998 Your Garden Oct. 16/2 If you see heathers and gorse then it is likely that your soil is acidic. 2005 Nature 25 Aug. 1101/1 The archaeal virus was discovered in an acidic hot spring..at Pozzuoli, Italy. 3. figurative. a. With reference to speech: cutting, acerbic, bitter. ΘΚΠ the world > action or operation > behaviour > bad behaviour > harshness or severity > [adjective] > specifically of actions or utterances stern?c1225 sore1526 severe1561 savage1821 acidic1936 1936 C. G. Bowers Jefferson in Power v. 111 No human being ever was a greater master of vituperation, and none ever had a greater vocabulary of acidic words. 1954 Jrnl. Southern Hist. 20 122 Motte makes acute and invariably acidic comments on the manners, customs, houses,..and appearance of the denizens of the regions he traversed. 1965 Washington Post 17 Jan. g1/2 Menotti himself has been vocally acidic about the school over the years. 1984 National Times (Sydney) 9 Mar. 18/1 Last month in Parliament he spat out a string of acidic references to her as ‘this whited sepulchre’, ‘this scion of society’ and as a member of the ‘silvertailed aristocracy’. 2004 Time Out N.Y. 14 Oct. 109/1 The filmmaker didn't think that anybody would mistake him for the movie's Gothamite with a gift for acidic gab. b. Strikingly bright, intense, or gaudy in colour. ΚΠ 1971 M. Tucker Structure of Color 7/2 An ‘acidic’ yellow, ‘lime’ green, ‘sour’ orange, ‘creamy’ beige, [etc.]. 1983 N.Y. Times (Nexis) 27 Mar. ii. 32 They come in four acidic shades—red, blue, green and yellow. 1995 Evening Standard (Nexis) 4 July 38 [He] is no stranger to the ‘classic with a twist’ world of acidic shirts. 2005 D. Hornung Colour vii. 121 The only prismatic colors are a yellow, which spreads out into a luminous pastel yellow tint, and a particularly acidic scarlet. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022). < adj.1868
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