Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A yellowish-red crystalline powder, C20H8 Br4O5, used in textile dyeing and ink manufacturing, as a biological stain, and in coloring gasoline.
  • noun 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.

from The Century Dictionary.

  • noun Tetrabromfluoresceïn (C20H8Br4O5), a valuable dye derived from coal-tar products, forming red or yellowish-red crystals.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) A yellow or brownish red dyestuff obtained by the action of bromine on fluoresceïn, and named from the fine rose-red which it imparts to silk. It is also used for making a fine red ink. Its solution is fluorescent.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A red, acidic dye commonly used in histological stains.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Greek ēōs, dawn (from its color); see aus- in Indo-European roots + –in.]

Examples

  • The protoplasm is clear, and contains a number of very fine granules, which stain with acid dyes, such as eosin, or with neutral dyes, and are therefore called oxyphil or neutrophil (Fig. 454, P).

    V. Angiology. 2. The Blood

  • Stained tissue culture cells and thin sections were labeled with either fluorescent dyes or common histology stains such as eosin, fast green, and safranin.

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  • Stained tissue culture cells and thin sections were labeled with either fluorescent dyes or common histology stains such as eosin, fast green, and safranin.

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  • Stained tissue culture cells and thin sections were labeled with either fluorescent dyes or common histology stains such as eosin, fast green, and safranin.

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  • His contributions include, in particular, structure determination of organic dyes (indigo, eosin) and the study of aromatic compounds (terpenes).

    The Nobel Prize in Chemistry: The Development of Modern Chemistry

  • [The name comes from eosin, a dye used to stain white cells so they can be viewed under a microscope.]

    Something Else to Worry About: Eosinophilic Esophagitis

  • I illustrated my notes for the latter two subjects with full colour sketches from the practical classes, using purple and pink pencils for haematoxylin and eosin.

    J. Robin Warren - Autobiography

  • Xenophon wrote oude touto eosin, all apothen ousin antipalous, etc.: ‘while the enemy is still some way off, they turn their companies so as to face him.’

    The Polity of the Athenians and the Lacedaemonians

  • Cross section of tongue, "5x" mag, H&E haematoxylin and eosin stain.

    Archive 2007-06-01

  • Cross section of tongue, "5x" mag, H&E haematoxylin and eosin stain.

    Historiffic

Comments

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  • eosin the color of dawn (the east), literally: red to (a)rose spectrum: The Hopi Language has dozens of word for dawn and its colors as indubitably many other languages do also:

    January 14, 2007

  • "Van Gogh was a fan of the vivid scarlet ‘geranium lake’ pigment derived from the synthetic dye, eosin. Even at the time it was known to fade. He compensated by using it more intensely, but was ultimately unable to hold back the photochemical tide."

    -- https://www.chemistryworld.com/feature/raiders-of-the-lost-pigments/3007237.article

    May 9, 2017