pyrogallicadj.

Brit.

/ˌpʌɪrə(ʊ)ˈɡalɪk/, U.S.

/ˌpaɪroʊˈɡælɪk/

Origin: Formed within English, by compounding; modelled on a French lexical item. Etymons: pyro- comb. form, gallic adj.²

Etymology: < pyro- comb. form + gallic adj.², after French pyrogallique (in acide pyrogallique: H. Braconnot 1831, in Ann. de chimie et de physique 46 207).

Chemistry.

1. pyrogallic acid n. = pyrogallol n.

ΘΚΠ

society > leisure > the arts > visual arts > photography > chemicals > [noun] > reducing agent

pyrogallic acid1835

pyrogallin1857

reducer1858

pyrogallol1868

pyro1879

1835 Lancet 30 May 290/2 Gallic and pyrogallic acids.

1861 Photogr. News Almanac in J. Wylde Circle of Sci. (c1865) I. 160/1 There are two methods of development; with pyrogallic acid and with gallic acid.

1914 F. E. Fritsch & E. J. Salisbury Introd. Study Plants xiv. 186 A small tube containing pyrogallate of potash. The latter is obtained by dissolving pyrogallic acid in water and adding an excess of caustic potash.

1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) xxii. 292 Pyrogallol or Pyrogallic Acid, 1:2:3-trihydroxybenzene, is the most important of the trihydric phenols.

1998 B. Bainbridge Master Georgie (1999) ii. 56 He developed the pictures by the puny gleam of a shaded candle, dipping each plate in a mixture of pyrogallic and acetic acid.

2. Containing or using pyrogallol.

ΚΠ

1856 E. A. Hadow in Orr's Circle Sci.: Pract. Chem. 194 After the pyrogallic solution has apparently done its utmost.

1903 Lancet 21 Feb. 518/1 On further experiments in anaerobic plate culture I have found that alkaline pyrogallic solution is much more satisfactory than hydrogen.

1986 Jrnl. Neurosci. Methods 18 317 This procedure involves glutaraldehyde fixation..and pyrogallic reduction of whole tissue blocks.

This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).

单词	pyrogallic
释义	pyrogallicadj. Brit. /ˌpʌɪrə(ʊ)ˈɡalɪk/, U.S. /ˌpaɪroʊˈɡælɪk/ Origin: Formed within English, by compounding; modelled on a French lexical item. Etymons: pyro- comb. form, gallic adj.² Etymology: < pyro- comb. form + gallic adj.², after French pyrogallique (in acide pyrogallique: H. Braconnot 1831, in Ann. de chimie et de physique 46 207). Chemistry. 1. pyrogallic acid n. = pyrogallol n. ΘΚΠ society > leisure > the arts > visual arts > photography > chemicals > [noun] > reducing agent pyrogallic acid1835 pyrogallin1857 reducer1858 pyrogallol1868 pyro1879 1835 Lancet 30 May 290/2 Gallic and pyrogallic acids. 1861 Photogr. News Almanac in J. Wylde Circle of Sci. (c1865) I. 160/1 There are two methods of development; with pyrogallic acid and with gallic acid. 1914 F. E. Fritsch & E. J. Salisbury Introd. Study Plants xiv. 186 A small tube containing pyrogallate of potash. The latter is obtained by dissolving pyrogallic acid in water and adding an excess of caustic potash. 1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) xxii. 292 Pyrogallol or Pyrogallic Acid, 1:2:3-trihydroxybenzene, is the most important of the trihydric phenols. 1998 B. Bainbridge Master Georgie (1999) ii. 56 He developed the pictures by the puny gleam of a shaded candle, dipping each plate in a mixture of pyrogallic and acetic acid. 2. Containing or using pyrogallol. ΚΠ 1856 E. A. Hadow in Orr's Circle Sci.: Pract. Chem. 194 After the pyrogallic solution has apparently done its utmost. 1903 Lancet 21 Feb. 518/1 On further experiments in anaerobic plate culture I have found that alkaline pyrogallic solution is much more satisfactory than hydrogen. 1986 Jrnl. Neurosci. Methods 18 317 This procedure involves glutaraldehyde fixation..and pyrogallic reduction of whole tissue blocks. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < adj.1835
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