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单词 nigrosine
释义

nigrosinen.

Brit. /ˈnʌɪɡrə(ʊ)siːn/, /ˈnʌɪɡrə(ʊ)sɪn/, U.S. /ˈnaɪɡrəˌsin/, /ˈnaɪɡrəs(ə)n/
Forms: 1800s– nigrosin, 1800s– nigrosine.
Origin: Apparently formed within English, by compounding. Etymons: nigro- comb. form, fuchsine n., eosin n.
Etymology: Apparently < nigro- comb. form + -sine, -sin in similar names of dyestuffs (as e.g. fuchsine n., eosin n.).
Chemistry.
Any of various dark blue or blackish aniline compounds used in dyes, inks, and leather polishes, and as biological stains.
ΘΚΠ
the world > matter > colour > named colours > black or blackness > blackening agent > [noun] > dye
sumac?a1350
sumac black1580
wood-soot1667
Manchester black1862
azurine1878
chestnut-extract1881
nigrosine1881
1881 Science 25 June 304/2 (table) Fluorescent substances... Nigrosine (acid sol.) [By transmitted light] Dirty green [Fluoresces] Red.
1884 Amer. Naturalist 18 651 To a saturated aqueous solution of picric acid add a small quantity of an aqueous solution of nigrosin.
1899 T. C. Allbutt et al. Syst. Med. VIII. 882 They stain well..with hæmatoxylin, congo-red, or acid nigrosin.
1943 Thorpe's Dict. Appl. Chem. VI. 467/2 Following the suggestion of Caro the name Induline is now reserved for those colouring matters produced from amines and azo-compounds whilst the name Nigrosine is reserved for those produced from nitrobenzene or nitrophenols.
1972 Materials & Technol. V. xii. 410 Suitable seasoning mixtures for black [leather] goods may contain hematin, nigrosine, egg albumen, casein, and an anti-mould agent.
1991 Lancet 9 Mar. 609/1 Faeces were examined under direct microscopy..in both physiological saline and 5% aqueous nigrosin (a counterstain, that proved superior for detection of scanty organisms).
This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022).
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n.1881
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