Definify.com
Webster 1913 Edition
Eosin
E′o-sin
,Noun.
[Gr. [GREEK] dawn.]
(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.
Definition 2024
Eosin
eosin
eosin
See also: Eosin
English
Structure diagram of eosin B
Structure diagram of eosin Y
Noun
eosin (countable and uncountable, plural eosins)
- (organic chemistry) A red, acidic dye commonly used in histological stains.
- 1999, Dan J. Goldstein, Understanding the Light Microscope, page 91,
- Thus the fluorescence of the familiar dye eosin can be excited quite well by ultra-violet or short-wave blue light, but is much better excited by visible green light with a wavelength close to that of the emitted radiation.
- 2000, J. Ochei, A. Kolhatkar, Medical Laboratory Science: Theory And Practice, page 450,
- Eosins are acid xanthene or phthalein dyes. Eosin Y, eosin B, phloxine and erythrosin (which unlike other eosins, is halogenated with iodine), are the common members of this group of dyes.
- 2012, John D. Bancroft, Christopher Layton, 10: The hemotoxylins and eosin, S. Kim Suvarna, Christopher Layton, John D. Bancroft (editors), Bancroft's Theory and Practice of Histological Techniques, 7th Edition, page 173,
- The hematoxylin and eosin stain (H&E) is the most widely used histological stain.
- 1999, Dan J. Goldstein, Understanding the Light Microscope, page 91,
Derived terms
- eosin B
- eosinic acid
- eosin Y
- H&E