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
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.
- 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
- Greek ēōs, dawn (from its color); see aus- in Indo-European roots + -in. (American Heritage® Dictionary of the English Language, Fourth Edition)
“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 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.”
“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.”
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red dyes, pigments, etc., names for red
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