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Related to eosin: Eosin Y


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.]


(ˈiːəʊsɪn) or


1. (Elements & Compounds) Also called: bromeosin a red crystalline water-insoluble derivative of fluorescein. Its soluble salts are used as dyes. Formula: C20H8Br4O5
2. (Dyeing) any of several similar dyes
[C19: from Greek ēōs dawn + -in; referring to the colour it gives to silk]
ˌeoˈsinic adj
ˈeosin-ˌlike adj


(ˈi ə sɪn)

also e•o•sine

(-sɪn, -ˌsin)

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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.eosin - a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures
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)


n. eosina, sustancia insoluble usada como colorante rojo en algunos tejidos que se estudian bajo el microscopio.
References in periodicals archive ?
The cells are uniformly round to oval with stippled chromatin and relatively abundant eosinophilic cytoplasm, consistent with a neuroendocrine adenoma (hematoxylin and eosin, original magnification x20).
t] tested, three hydrodynamic assays of stimulus-response were carried out in pulse type using eosin Y and bromophenol blue as tracers, with injection volume of 10 mL and injection time of 10 s.
Caption: (L-R) Hans Gerhard Creutzfeldt (18851964); Alfons Maria Jakob (1884-1931); Creutzfeldt-Jakob disease, cerebrum hematoxylin and eosin staining showing spongiform encephalophathy.
Portions of liver were fixed in 10% neutral buffered formalin, embedded in paraffin, sectioned for light microscopy, and stained with hematoxylin and eosin, Ziehl-Neelsen acid fast, and the periodic acid-Schiff (PAS) stain.
coli is a prerequisite which is often complicated in practice, due to the co-occurence of other interfering enteric bacteria such as Citrobacter, Klebsiella and Enterobacter, which also ferment lactose and exhibit similar colony morphology on Levine's Eosin Methylene Blue (EMB) agar selective for E.
In this perspective photocatalytic efficacy of organometallic ruthenium and eosin Y have been investigated in connection to their pursuit for the photocatalytic oxidative coupling of N-aryl tetrahydroisoquinoline with carbon and sulfur containing nucleophiles.
bancrofti along with inflammatory cells in fine needle aspirate of lymph node (Hematoxylin- Eosin, X40).
4] Hematoxylin, which is obtained from the Mexican tree Haematoxylon campechianum, is an example of a natural dye that is widely used in histology and histochemistry, while eosin is a synthetic dye also used in histology.
Hematoxylin and eosin stains showed nests of cells with eosinophilic cytoplasm separated by a hyalinized stroma, with no evidence of anaplasia or invasion, consistent with a Paraganglioma.
The assessment of cervical tissue samples has been traditionally done using the slide-based hematoxylin and eosin (H&E) stain, but the method of interpretation is subjective and there is diagnostic variability from pathologist to pathologist.
The proposed method is based on the formation of binary complexes between these drugs and eosin Y in aqueous acetate buffered medium.