fluorescein

fluorescein
noun
a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed) (Freq. 2)
Topics: ↑solution
Hypernyms: ↑dye, ↑dyestuff, ↑absorption indicator
Hyponyms: ↑eosin, ↑bromeosin

Useful english dictionary. 2012.

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  • fluorescein — fluo res ce*in, fluoresceine fluo res ce*ine, fluorescein flu o*res ce*[ i]n, n. (Chem.) A yellowish red, crystalline substance, {C20H12O5}, produced by heating together phthalic anhydride and resorcin; so called, from the very brilliant… …   The Collaborative International Dictionary of English

  • fluorescein — fluo res ce*in, fluoresceine fluo res ce*ine, fluorescein flu o*res ce*[ i]n, n. (Chem.) A yellowish red, crystalline substance, {C20H12O5}, produced by heating together phthalic anhydride and resorcin; so called, from the very brilliant… …   The Collaborative International Dictionary of English

  • fluorescein — fluorescèīn m <G fluoresceína> DEFINICIJA kem. C20H12O5 narančasti kristalni prah, u vodenoj otopini fluorescira zeleno ETIMOLOGIJA v. fluorescencija …   Hrvatski jezični portal

  • fluorescein —  Fluorescein  Флуоресцеин   Флуоресцентный краситель, флуоресцирующий в зеленой области при возбуждении синим или ультрафиолетовым светом. Разбавленный раствор этого вещества применяется для определения имеющихся дефектов на поверхности роговицы… …   Толковый англо-русский словарь по нанотехнологии. - М.

  • fluorescein — [flo͞o΄əres′ē in] n. [< FLUORESCE + IN1: from its bright fluorescence in solution] a yellowish red, crystalline compound, C20H12O5, made synthetically from resorcinol and phthalic anhydride: a dilute alkaline solution appears green by… …   English World dictionary

  • Fluorescein — Chembox new ImageFile = Fluoresceine.svg ImageSize = ImageFile2 = Fluorescein sample.jpg IUPACName = OtherNames = Fluorescein, resorcinolphthalein, C.I. 45350, solvent yellow 94, D C yellow no. 7, angiofluor, Japan yellow 201, soap yellow,… …   Wikipedia

  • Fluorescein — Strukturformel Allgemeines Name Fluorescein Andere Namen …   Deutsch Wikipedia

  • Fluorescein — Flu|o|res|ce|in [↑ Fluoreszenz u. ↑ in (3)], das; s; veraltetes Syn.: Resorcinphthalein: rote krist. oder gelbe amorphe Verb., Smp. 314 °C, deren wässrig alkalische oder alkoholische Lsg. grün fluoreszieren. Von dem Xanthenfarbstoff F. leiten… …   Universal-Lexikon

  • fluorescein — Fluorophore commonly used in microscopy. Fluorescein di acetate can be used as a vital stain, or can be conjugated to proteins (particularly antibodies) using isothiocyanate. Excitation is at 365nm, and the emitted light is green yellow (450… …   Dictionary of molecular biology

  • fluorescein — /floo res ee in, flaw , floh /, n. Chem. an orange red, crystalline, water insoluble solid, C20H12O5, that in alkaline solutions produces an orange color and an intense green fluorescence: used to trace subterranean waters and in dyes. Also,… …   Universalium

  • fluorescein — An orange red crystalline powder that yields a bright green fluorescence in solution, and is reduced to fluorescin; a nontoxic, water soluble indicator used diagnostically to trace water flow. SYN: resorcinol phthalic anhydride …   Medical dictionary

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