Fluoresceine

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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 yellowish green fluorescence
     of its alkaline solutions. It has acid properties, and its


     salts of the alkalies are known to the trade under the name
     of {uranin}.
  
     Syn: fluorescein, fluorescent dye, resorcinolphthalein.
          [1913 Webster]

From WordNet (r) 2.0 [wn]:

  fluoresceine
       n : 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) [syn: {fluorescein}, {fluorescent dye}, {resorcinolphthalein}]