pyron.¹

Brit.

/ˈpʌɪrəʊ/, U.S.

/ˈpaɪˌroʊ/

Origin: Formed within English, by clipping or shortening. Etymons: pyrogallic acid n. at pyrogallic adj. 1, pyrogallol n.

Etymology: Shortened < either pyrogallic acid n. at pyrogallic adj. 1 or pyrogallol n.

Photography.

Pyrogallol used as a developing agent. Frequently attributive.

ΘΚΠ

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

pyrogallic acid1835

pyrogallin1857

reducer1858

pyrogallol1868

pyro1879

1879 Cassell's Techn. Educator (new ed.) III. 294 The proper developing agent for collodio-bromide plates is..known as the alkaline pyro-developer.

1885 C. G. W. Lock Workshop Receipts 4th Ser. 376/2 Take enough of the pyro solution in your developing tray to well cover the plate.

1892 Photogr. Ann. II. 44 Pyro and other photo chemicals are violent poisons.

1916 Oakland (Calif.) Tribune 15 June 5/1 The reason for our success in this specialty is the fact that we develop each film separately, using fresh pyro developer with each ‘batch’.

1939 D. R. White & J. R. Weber in K. Henney & B. Dudley Handbk. Photogr. xi. 328 To reduce the time of development and increase contrast, both metol and hydroquinone are used with pyro, particularly for deep tank work.

1989 Appl. Optics 28 423 Two developers were used in these experiments. One was a metols ascorbic acid developer,..while the other was a strongly tanning pyrogallol ( pyro) developer.

1999 Pensacola News Jrnl. (Florida) (Nexis) 31 Dec. e8 To minimize the problem of grain, I use a Pyro developer at a cold temperature to process the negatives.

Compounds

Forming the names of developers consisting of solutions of pyrogallol with another substance, as pyro-metol, pyro-soda, etc.

ΚΠ

1885 C. G. W. Lock Workshop Receipts 4th Ser. 357/1 The pyro-lime developer becomes violet and brown in use.

1890 Internat. Ann. Anthonys Photogr. Bull. 108 Now a word about developers. I have tried them all... Ferrous oxalate pyro-soda, pyro-potash, hydroquinone, etc.

1907 Westm. Gaz. 2 Mar. 18/2 A green-brown or brown-black colour, such as is given by a pyro-metol developer or pyro-soda not too heavily dosed with sulphite.

1921 Glasgow Herald 23 Mar. 8 Where pyro-soda developer is used many may prefer an acid hypo solution of about the same strength.

1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) xxii. 292 Pyrogallol is employed as a photographic developer, an alkaline solution of this substance being the basis of the well-known developer ‘pyro-soda’.

2000 S. G. Anchell Darkroom Cookbk. (ed. 2) iv. 42 Other superadditive combinations are pyro-metol, metol-ascorbic acid, [etc.].

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

pyron.²

Brit.

/ˈpʌɪrəʊ/, U.S.

/ˈpaɪˌroʊ/

Origin: Formed within English, by clipping or shortening. Etymon: pyromaniac n.

Etymology: Shortened < pyromaniac n.

colloquial.

A pyromaniac.

ΘΚΠ

the world > health and disease > mental health > mental illness > degree or type of mental illness > [noun] > compulsion neurosis > pyromania > person

pyromaniac1845

pyro1971

1971 A. McCaffrey Ring of Fear (1979) ix. 237 Rafe yelled louder that he was a murderer, a pyro.

1977 N. Hyno Sandler Inq. (1978) i. 4 ‘A pyromaniac?’..‘No. Too neat a trick for a pyro. Pyros are sloppy.’

1990 Los Angeles Times (Nexis) 23 Sept. a4 The female pyros typically set a number of small fires inside their homes.

2004 E. Emerson Pyro 52 Even then we both believed the pyro would be apprehended and punished.

This is a new entry (OED Third Edition, December 2007; most recently modified version published online March 2022).

pyron.³

Brit.

/ˈpʌɪrəʊ/, U.S.

/ˈpaɪˌroʊ/

Forms:

α. 1900s– pyro.

β. 1900s– pyros.

Origin: Formed within English, by clipping or shortening. Etymon: pyrotechnics n.

Etymology: Shortened < pyrotechnics n.

colloquial.

= pyrotechnics n. 2.

ΘΚΠ

society > leisure > the arts > performance arts > legerdemain, etc. > [noun] > types of

knife-playinga1400

fire-eating1754

pyrotechnics1778

salamandership1787

juggling1836

second sight1859

sword-swallowing1873

palming1899

pyro1987

1987 Toronto Star 20 Mar. d10/4 Restrictions in certain venues over there mean we can't deploy the full pyro.

1992 Billboard (Nexis) 9 May 69 The international flavor continued with..pyros by Le Maitre..and a pair of Star Vision screens from ScreenCo.

2002 Entertainm. Design Feb. 17/2 Designer Steve Cohen pulled out all the stops,..combining..sets, lights, video, lasers, pyro, [etc.].

This is a new entry (OED Third Edition, December 2007; most recently modified version published online March 2022).

> see also

also refers to : pyro-comb. form

n.¹1879

n.²1971

n.³1987

单词	pyro
释义	pyron.¹ Brit. /ˈpʌɪrəʊ/, U.S. /ˈpaɪˌroʊ/ Origin: Formed within English, by clipping or shortening. Etymons: pyrogallic acid n. at pyrogallic adj. 1, pyrogallol n. Etymology: Shortened < either pyrogallic acid n. at pyrogallic adj. 1 or pyrogallol n. Photography. Pyrogallol used as a developing agent. Frequently attributive. ΘΚΠ society > leisure > the arts > visual arts > photography > chemicals > [noun] > reducing agent pyrogallic acid1835 pyrogallin1857 reducer1858 pyrogallol1868 pyro1879 1879 Cassell's Techn. Educator (new ed.) III. 294 The proper developing agent for collodio-bromide plates is..known as the alkaline pyro-developer. 1885 C. G. W. Lock Workshop Receipts 4th Ser. 376/2 Take enough of the pyro solution in your developing tray to well cover the plate. 1892 Photogr. Ann. II. 44 Pyro and other photo chemicals are violent poisons. 1916 Oakland (Calif.) Tribune 15 June 5/1 The reason for our success in this specialty is the fact that we develop each film separately, using fresh pyro developer with each ‘batch’. 1939 D. R. White & J. R. Weber in K. Henney & B. Dudley Handbk. Photogr. xi. 328 To reduce the time of development and increase contrast, both metol and hydroquinone are used with pyro, particularly for deep tank work. 1989 Appl. Optics 28 423 Two developers were used in these experiments. One was a metols ascorbic acid developer,..while the other was a strongly tanning pyrogallol ( pyro) developer. 1999 Pensacola News Jrnl. (Florida) (Nexis) 31 Dec. e8 To minimize the problem of grain, I use a Pyro developer at a cold temperature to process the negatives. Compounds Forming the names of developers consisting of solutions of pyrogallol with another substance, as pyro-metol, pyro-soda, etc. ΚΠ 1885 C. G. W. Lock Workshop Receipts 4th Ser. 357/1 The pyro-lime developer becomes violet and brown in use. 1890 Internat. Ann. Anthonys Photogr. Bull. 108 Now a word about developers. I have tried them all... Ferrous oxalate pyro-soda, pyro-potash, hydroquinone, etc. 1907 Westm. Gaz. 2 Mar. 18/2 A green-brown or brown-black colour, such as is given by a pyro-metol developer or pyro-soda not too heavily dosed with sulphite. 1921 Glasgow Herald 23 Mar. 8 Where pyro-soda developer is used many may prefer an acid hypo solution of about the same strength. 1955 B. C. L. Kemp Elem. Org. Chem. (new ed.) xxii. 292 Pyrogallol is employed as a photographic developer, an alkaline solution of this substance being the basis of the well-known developer ‘pyro-soda’. 2000 S. G. Anchell Darkroom Cookbk. (ed. 2) iv. 42 Other superadditive combinations are pyro-metol, metol-ascorbic acid, [etc.]. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). pyron.² Brit. /ˈpʌɪrəʊ/, U.S. /ˈpaɪˌroʊ/ Origin: Formed within English, by clipping or shortening. Etymon: pyromaniac n. Etymology: Shortened < pyromaniac n. colloquial. A pyromaniac. ΘΚΠ the world > health and disease > mental health > mental illness > degree or type of mental illness > [noun] > compulsion neurosis > pyromania > person pyromaniac1845 pyro1971 1971 A. McCaffrey Ring of Fear (1979) ix. 237 Rafe yelled louder that he was a murderer, a pyro. 1977 N. Hyno Sandler Inq. (1978) i. 4 ‘A pyromaniac?’..‘No. Too neat a trick for a pyro. Pyros are sloppy.’ 1990 Los Angeles Times (Nexis) 23 Sept. a4 The female pyros typically set a number of small fires inside their homes. 2004 E. Emerson Pyro 52 Even then we both believed the pyro would be apprehended and punished. This is a new entry (OED Third Edition, December 2007; most recently modified version published online March 2022). pyron.³ Brit. /ˈpʌɪrəʊ/, U.S. /ˈpaɪˌroʊ/ Forms: α. 1900s– pyro. β. 1900s– pyros. Origin: Formed within English, by clipping or shortening. Etymon: pyrotechnics n. Etymology: Shortened < pyrotechnics n. colloquial. = pyrotechnics n. 2. ΘΚΠ society > leisure > the arts > performance arts > legerdemain, etc. > [noun] > types of knife-playinga1400 fire-eating1754 pyrotechnics1778 salamandership1787 juggling1836 second sight1859 sword-swallowing1873 palming1899 pyro1987 1987 Toronto Star 20 Mar. d10/4 Restrictions in certain venues over there mean we can't deploy the full pyro. 1992 Billboard (Nexis) 9 May 69 The international flavor continued with..pyros by Le Maitre..and a pair of Star Vision screens from ScreenCo. 2002 Entertainm. Design Feb. 17/2 Designer Steve Cohen pulled out all the stops,..combining..sets, lights, video, lasers, pyro, [etc.]. This is a new entry (OED Third Edition, December 2007; most recently modified version published online March 2022). > see also also refers to : pyro-comb. form < n.¹1879n.²1971n.³1987 see also
随便看	θ136235 θ136236 θ136237 θ136238 θ136239 θ13624 θ136240 θ136241 θ136242 θ136243 θ136244 θ136245 θ136246 θ136247 θ136248 θ136249 θ13625 θ136250 θ136251 θ136252 θ136253 θ136254 θ136255 θ136256 θ136257

pyron.1

Compounds

pyron.2

pyron.3

> see also

pyron.¹

pyron.²

pyron.³