Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A red crystalline powder, C20H8O5Br4, used in textile dyeing and ink manufacturing and in coloring gasoline.
- n. The red sodium or potassium salt of this powder, used in biology to stain cells.
Century Dictionary and Cyclopedia
- n. Tetrabromfluoresceïn (C20H8Br4O5), a valuable dye derived from coal-tar products, forming red or yellowish-red crystals. It forms a potassium salt, the eosin of commerce, which is a brown powder, soluble in water, and dyes silk and woolen goods rose-red. Also
eosinic acid .
Wiktionary
- n. A red, acidic dye commonly used in histological stains.
GNU Webster's 1913
- n. (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.
WordNet 3.0
- n. 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
- Greek ēōs, dawn (from its color); see aus- in Indo-European roots + -in. (American Heritage® Dictionary of the English Language, Fourth Edition)
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).”
“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.]”
“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.”
“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.’”
“Cross section of tongue, "5x" mag, H&E haematoxylin and eosin stain.”
“For the pathologist faced with identifying an infectious microorganism on hematoxylin and eosin or special stain, the database offers an excellent set of control imagesor comparison.”
davidrothman.net » Image Database: Pathology of Infectious Diseases
“The stimulus was given by his discovery of a new group of beautifully coloured compounds, the so-called phthaleins, of which only the eosin pigments, highly important to industry, and the rhodamin dyes derived from them, may have particular mention here.”
“It was labeled: Lung, Cat, c.s., hematoxylin & eosin.”
Lists
These user-created lists contain the word ‘eosin’.
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Reds
crimson, blood, scarlet, rott, rojo, brick, fire engine, vermilion, carmine, burgundy, amaranth, alizarin and 115 more...
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HU Realia
Cultural realia from Hungary.
I have only included realia that already have an English spelling variant and DID NOT include Hungarian words that would be used in English texts unchang...charcoal kiln, embroidered felt ..., farmstead, golden stick, graft, herdsman’s whip, inn, lever well, limekiln, local border traffic, maypole, merino and 356 more...
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RED
red dyes, pigments, etc., names for red
mucicarmine, zoonerythrin, sindoor, minium, vermilion, brazilin, rose madder lake, quinacridone, haematin, erythrosin, eurhodin, nuclear fast red and 8 more...
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fbharjo's Words
jumelle, kef, kenspeckle, lautitious, essentic, pilpulistic, impavid, cicurant, clou, chrysostomic, miasma, teleology and 1625 more...
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Dyes & Pigments
gamboge, anil, catechu, cinnabar, vermilion, ponceau, cochineal, kermes, lac, eosin, azure, indigo and 134 more...
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Discoveries
Words I've recently learned.
demiurgic, enfilade, filigree, pyriform, repoussé, eosin, perambulate, hirsute, hansel, presbyopia, oleaginous, floccinaucinihili... and 15 more...
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Short and Sweet
Five-letter maximun.
dell, knell, glen, dour, cant, chary, segue, quash, onus, cozen, quaff, aver and 59 more...
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Vocabulary
Tweets
Looking for tweets for eosin.

fbharjo 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: Jan 14, 2007