bleaching powder: meaning, definition, pronunciation and examples
C1technical, historical
Quick answer
What does “bleaching powder” mean?
A white powder, chiefly calcium hypochlorite, used for bleaching and disinfection.
Audio
Pronunciation
Definition
Meaning and Definition
A white powder, chiefly calcium hypochlorite, used for bleaching and disinfection.
A chemical compound used historically and in industry to whiten fabrics, disinfect water, and sanitize surfaces. It is a source of chlorine.
Dialectal Variation
British vs American Usage
Differences
No significant lexical difference. Both dialects use the term for the same chemical product.
Connotations
The term has a somewhat dated or industrial feel in both dialects, associated more with historical or large-scale use rather than household products.
Frequency
Equally low-frequency in both dialects. More common in technical, historical, or industrial contexts.
Grammar
How to Use “bleaching powder” in a Sentence
The [material] was treated with bleaching powder.Bleaching powder is used for [purpose].A solution was made from bleaching powder and water.Vocabulary
Collocations
Examples
Examples of “bleaching powder” in a Sentence
adjective
British English
- The bleaching-powder industry once thrived here.
- A bleaching-powder solution was prepared.
American English
- The bleaching-powder industry once thrived here.
- A bleaching-powder solution was prepared.
Usage
Meaning in Context
Business
Rare, might appear in historical business texts or supply catalogs for industrial chemicals.
Academic
Used in chemistry, history of technology, and textile industry studies.
Everyday
Virtually never used in casual conversation. A layperson would say 'bleach' or 'chlorine bleach'.
Technical
The standard term in chemistry, water treatment, and industrial hygiene for the solid form of calcium hypochlorite.
Vocabulary
Synonyms of “bleaching powder”
Strong
Weak
Vocabulary
Antonyms of “bleaching powder”
Watch out
Common Mistakes When Using “bleaching powder”
- Using 'bleaching powder' to refer to modern liquid household bleach (sodium hypochlorite solution).
- Omitting the '-ing' (saying 'bleach powder').
FAQ
Frequently Asked Questions
No. Household bleach is typically a liquid solution of sodium hypochlorite. Bleaching powder is a solid, primarily calcium hypochlorite, used more in industrial and historical contexts.
Yes, but its use is more specialized. It is used for disinfection of drinking water and swimming pools in some contexts, and in certain industrial bleaching processes.
It specifies the physical state (solid, powdered) of the product, distinguishing it from liquid bleaches. This is important for storage, transportation, and application methods.
It would sound very technical or old-fashioned. In everyday situations, people simply say 'bleach' or specify 'powdered bleach' or 'chlorine powder' if needed.
A white powder, chiefly calcium hypochlorite, used for bleaching and disinfection.
Bleaching powder is usually technical, historical in register.
Bleaching powder: in British English it is pronounced /ˈbliːtʃɪŋ ˌpaʊdə/, and in American English it is pronounced /ˈbliːtʃɪŋ ˌpaʊdər/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of 'powder' that does 'bleaching'. It's a two-word compound where the first word describes the function of the powder.
Conceptual Metaphor
CLEANLINESS IS WHITENESS / PURIFICATION IS BLEACHING
Practice
Quiz
What is the primary active chemical in traditional bleaching powder?