staining
Definition
- Noun:
- The act of making a dirty mark or discoloration: The process of accidentally or deliberately causing a spot, smear, or patch of different color on a surface.
- (Biology/Histology) A technique for coloring specimens: The process of applying dyes or pigments to biological tissues, cells, or microorganisms to make specific structures visible under a microscope for study.
Usage Examples
- Noun (General Act):
- The staining of the white tablecloth with red wine was immediate.
- Careful handling is required to prevent the staining of the delicate fabric.
- Noun (Scientific Technique):
- Gram staining is a fundamental technique used to classify bacteria.
- The pathologist examined the tissue after staining to look for abnormal cells.
Advanced Usage
- "Differential staining": A staining method that uses multiple dyes to distinguish between different types of microorganisms or cellular structures.
- Differential staining allows microbiologists to tell Gram-positive and Gram-negative bacteria apart.
- "Vital staining": A technique that stains living cells without immediately killing them.
- Vital staining is used to observe processes within living cells.
Variants and Related Words
- Stain (verb/noun): To cause a stain; a discolored spot. (e.g., "The ink will your fingers." / "There is a coffee on the report.")
- Stainable (adjective): Capable of being stained, especially by dyes.
- The cell wall structure makes the bacteria stainable with crystal violet.
- Stainer (noun): A person or device that applies stains.
- The laboratory technician worked as a tissue stainer.
Synonyms
- Soiling: Making something dirty.
- Discoloration: The process of changing or losing color.
- Coloration (Scientific): The process of adding color, especially in biology.
Related Phrases
- Staining solution: The liquid containing the dye used in the staining process.
- Immerse the slide in the staining solution for 60 seconds.
- Staining protocol: The standardized set of steps for a particular staining method.
- The experiment failed due to a deviation from the established staining protocol.
Related Idioms
- A stain on one's character/reputation: A mark of disgrace or dishonor.
- The accusations, though false, left a stain on his reputation. (Note: This idiom uses the core noun "stain," not the gerund "staining.")
Noun
-
the act of spotting or staining something
-
(histology) the use of a dye to color specimens for microscopic study
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