counterstain: meaning, definition, pronunciation and examples
C2technical
Quick answer
What does “counterstain” mean?
A secondary stain applied to a biological specimen to contrast with or provide detail to the primary stain.
Audio
Pronunciation
Definition
Meaning and Definition
A secondary stain applied to a biological specimen to contrast with or provide detail to the primary stain.
In a broader sense, a contrasting technique or element used to highlight differences by applying an opposite quality.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling is identical.
Connotations
None beyond the technical laboratory context.
Frequency
Equally rare in general discourse, used exclusively in histology, cytology, and microbiology in both regions.
Grammar
How to Use “counterstain” in a Sentence
counterstain something (with something)be counterstained (with something)Vocabulary
Collocations
Examples
Examples of “counterstain” in a Sentence
verb
British English
- The technician will counterstain the tissue section with haematoxylin.
- After the primary antibody step, the slides were counterstained.
American English
- You need to counterstain the sample with eosin for one minute.
- The nuclei were counterstained with DAPI for fluorescence imaging.
adjective
British English
- The counterstain procedure is critical for visualisation.
- A good counterstain solution was prepared.
American English
- Follow the counterstain protocol exactly.
- The counterstain step differentiates the structures.
Usage
Meaning in Context
Business
Not used.
Academic
Used in scientific writing, particularly in biology, medicine, and materials science papers describing microscopic techniques.
Everyday
Virtually never used.
Technical
Core term in histology, pathology, and microscopy. Refers to dyes like haematoxylin (after eosin), methylene blue, or safranin.
Vocabulary
Synonyms of “counterstain”
Strong
Neutral
Weak
Vocabulary
Antonyms of “counterstain”
Watch out
Common Mistakes When Using “counterstain”
- Using 'counterstain' to refer to any stain (it is specifically the secondary one).
- Confusing 'counterstain' (technique) with 'counter-stain' (a stain that resists another, which is not standard).
FAQ
Frequently Asked Questions
No, it is a highly specialised technical term used almost exclusively in laboratory science, particularly histology and microbiology.
Yes, in technical contexts. E.g., 'The tissue was counterstained with methylene blue.'
In the common H&E stain (Haematoxylin and Eosin), haematoxylin is the counterstain (staining nuclei blue) applied after eosin (which stains cytoplasm pink).
Primarily histology, pathology, cytology, microbiology, and sometimes forensic science or materials science where staining techniques are used.
A secondary stain applied to a biological specimen to contrast with or provide detail to the primary stain.
Counterstain is usually technical in register.
Counterstain: in British English it is pronounced /ˈkaʊn.tə.steɪn/, and in American English it is pronounced /ˈkaʊn.t̬ɚ.steɪn/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think COUNTER (against/opposite) + STAIN. It's the stain you apply *against* or in contrast to the first one to make details stand out.
Conceptual Metaphor
VISIBILITY IS CONTRAST. Applying an opposing colour makes invisible structures become visible.
Practice
Quiz
What is the primary purpose of a counterstain?