#dye__dyestuff  a usually soluble substance for staining or coloring e.g. fabrics or hair
  supertype:  coloring_material__colouring_material__colouringmaterial__color__colour  any material used for its color
  part:  chromophore
  subtype:  acid_dye  dye in which the chromophore is part of a negative ion
     subtype:  metallized_dye  acid dye in which the negative ion contains a chelated metal atom
  subtype:  alizarin_yellow  any of various yellow dyes; not related chemically to alizarin but applied in the same manner
  subtype:  anil__indigo__indigotin  a blue dye obtained from plants or made synthetically
  subtype:  aniline_dye__anilinedye  any of many dyes made from aniline
  subtype:  azo_dye  any dye containing one or more azo groups
     subtype:  congo_red  a red-brown azo dye especially as a chemical pH indicator (congo red is red in basic and blue in acidic solutions)
     subtype:  methyl_orange  an azo dye used as an acid-base indicator; used for titrations involving weak bases
  subtype:  basic_dye__basicdye  dye in which the chromophore are part of a positive ion
  subtype:  blueing__blue  used to whiten laundry or hair or give it a bluish tinge
  subtype:  bromophenol_blue__bromophenolblue__bromphenol_blue__tetrabromo-phenolsulfonephthalein  a dye used as an acid-base indicator
  subtype:  bromothymol_blue__bromothymolblue__bromthymolblue  a dye used as an acid-base indicator
  subtype:  cochineal  a red dyestuff consisting of dried bodies of female cochineal insects
  subtype:  cyanine_dye__cyaninedye  any of a class of dyes containing a -CH= group linking two nitrogen-containing heterocyclic rings; used as sensitizers in photography
  subtype:  direct_dye__substantive_dye  dye with a high affinity for cellulose fibers (cotton or rayon etc.)
  subtype:  fluorescein__fluoresceine__fluorescent_dye__resorcinolphthalein  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)
     subtype:  eosin__bromeosin  a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures
  subtype:  fluorochrome  any of various fluorescent substances used in fluorescence microscopy to stain specimens
     subtype:  fluorescein_isothiocyanate__fluoresceinisothiocyanate__fluorescein_isocyanate__fluoresceinisocyanate  a fluorochrome commonly conjugated with antibodies for use in indirect immunofluorescence
  subtype:  hair_dye__hair_coloring  a dye or tint for the hair
     subtype:  henna  a reddish brown dye used especially on hair
     subtype:  rinse.hair_dye  a liquid preparation used on wet hair to it a tint
  subtype:  Kendal_green__Kendal  a green dye, often used to color cloth, which is obtained from the woad plant
  subtype:  lac_dye__lacdye  scarlet dye like cochineal; extracted with alkali from stick lac
  subtype:  lead_acetate__sugar_of_lead  a poisonous white solid (Pb[CH3CO]2) used in dyeing cotton and in making enamels and varnishes
  subtype:  cudbear__archil  a purplish dye obtained from orchil lichens
  subtype:  quercitron  a yellow dye made from the bark of the quercitron oak tree
  subtype:  radiopaque_dye  dye that does not allow the passage of X rays or other radiation; used to outline certain organs during X-ray examination
  subtype:  Tyrian_purple.dye__tyrianpurple  a red-purple to deep purple dye obtained from snails or made synthetically
  subtype:  vat_dye__vat_color__vatcolor  a dye that is applied by reducing the dye to a base-soluble form, applying the dye, then regenerating the insoluble dye by oxidation in the material; used for dyeing cotton
  subtype:  woad.dye  a blue dyestuff obtained from the woad plant

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