| 释义 |
eosin
e·o·sin E0171000 (ē′ə-sən)n.1. A yellowish-red crystalline powder, C20H8 Br4O5, used in textile dyeing and ink manufacturing, as a biological stain, and in coloring gasoline.2. Any of a group of red fluorescent bromine derivatives of fluorescein, or their sodium or potassium salts, used in ink manufacturing, textile dyeing, and in biology to stain cells.
[Greek ēōs, dawn (from its color); see aus- in Indo-European roots + -in.]eosin (ˈiːəʊsɪn) or eosinen1. (Elements & Compounds) Also called: bromeosin a red crystalline water-insoluble derivative of fluorescein. Its soluble salts are used as dyes. Formula: C20H8Br4O52. (Dyeing) any of several similar dyes[C19: from Greek ēōs dawn + -in; referring to the colour it gives to silk] ˌeoˈsinic adj ˈeosin-ˌlike adje•o•sin (ˈi ə sɪn) also e•o•sine (-sɪn, -ˌsin)
n. 1. a red, crystalline, water-insoluble solid, C20H8Br4O5, used chiefly as an acid dye for silk and as a histological stain. 2. any of a variety of similar dyes. [1865–70; < Greek ēṓs dawn (see eo-) + -in1] e`o•sin′ic, adj. Thesaurus| Noun | 1. | eosin - a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structuresbromeosinfluorescein, 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) |
Translationseosin
eosin[′ē·ə·sən] (organic chemistry) C20H8O5Br4 A red fluorescent dye in the form of triclinic crystals that are insoluble in water; used chiefly in cosmetics and as a toner. Also known as bromeosin; bromo acid; eosine; tetrabromofluorescein. The red to brown crystalline sodium or potassium salt of this dye; used in organic pigments, as a biological stain, and in pharmaceuticals. eosin
eosin [e´o-sin] any of a class of rose-colored stains or dyes, all being bromine derivatives of fluorescein; eosin Y, the sodium salt of tetrabromofluorescein, is much used in histologic and laboratory procedures.e·o·sin (ē'ō-sin), A derivative of fluorescein used as a fluorescent acid dye for cytoplasmic stains and counterstains in histology and in Romanowsky-type blood stains. [G. ēōs, dawn] eosin (ē′ə-sən)n.1. A yellowish-red crystalline powder, C20H8 Br4O5, used in textile dyeing and ink manufacturing, as a biological stain, and in coloring gasoline.2. Any of a group of red fluorescent bromine derivatives of fluorescein, or their sodium or potassium salts, used in ink manufacturing, textile dyeing, and in biology to stain cells.e·o·sin (ē'ō-sin) A fluorescent acid dye used for cytoplasmic stains and counterstains in histology and in Romanowsky-type blood stains. [G. ēōs, dawn]eosin A red dye commonly used to stain bacteria or tissue slices, for microscopic examination.eosin a rose-pink fluorescent dye, the soluble potassium salt being used in microscopic staining.e·o·sin (ē'ō-sin) Fluorescent acid dye used for cytoplasmic stains and counterstains in histology. [G. ēōs, dawn]eosin
Related to eosin: Eosin YSynonyms for eosinnoun a red fluorescent dye resulting from the action of bromine on fluoresceinSynonymsRelated Words- fluorescein
- fluoresceine
- fluorescent dye
- resorcinolphthalein
|