eosin
/'i:ousin/
Definition
- Noun:
- A red fluorescent dye produced by the reaction of bromine with fluorescein. It is used in cosmetics and as a biological stain to study cell structures under a microscope.
Usage
- Noun: "Eosin" is a technical term used primarily in chemistry, histology (the study of tissues), and cosmetic manufacturing. It is an uncountable noun referring to the substance itself.
- The pathologist used eosin to stain the cytoplasm of the cells pink.
- This lipstick shade contains eosin.
Advanced Usage
- "Eosin Y": This is the most common form of eosin used in biological staining, often paired with a blue stain called hematoxylin in the "H&E stain" procedure.
- The tissue sample was prepared with Hematoxylin and Eosin Y for examination.
Variants and Related Words
- Eosinophil (noun): A type of white blood cell that stains readily with eosin dye. This is a related but distinct biological term.
- A high count of eosinophils can indicate an allergic reaction.
Synonyms
- Acid red 87: An alternative industrial name for eosin.
- Tetrabromofluorescein: The systematic chemical name for eosin.
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
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