demagnetize
C1Technical/Specialized
Definition
Meaning
to remove magnetic properties from something.
To reduce or eliminate magnetism, often intentionally; by extension, to weaken or neutralize a force, influence, or attraction.
Linguistics
Semantic Notes
Primarily a technical term; in metaphorical use, it implies deliberate neutralization or reduction of power/attraction.
Dialectal Variation
British vs American Usage
Differences
Spelling: British English also accepts 'demagnetise' with an 's', while American English exclusively uses 'demagnetize' with a 'z'. No significant difference in meaning or usage.
Connotations
Same technical connotation in both varieties.
Frequency
Equally low-frequency in both varieties, limited to technical, engineering, or industrial contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
SVO (The technician demagnetized the tape.)SVOO (The process demagnetized the hard drive its data.)SVOA (He demagnetized the card by mistake.)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Demagnetize a situation. (Metaphorical: to reduce tension or attraction.)”
Usage
Context Usage
Business
Crucial in data security for permanently sanitizing old magnetic storage media.
Academic
Used in physics and materials science regarding magnetic domains and hysteresis.
Everyday
Rare; e.g., 'My credit card got demagnetized by my phone.'
Technical
Standard term in electronics, data storage, and metalworking.
Examples
By Part of Speech
verb
British English
- You must demagnetise the old tapes before disposal.
- The strong field could demagnetise the compass.
American English
- They had to demagnetize the entire hard drive array.
- Be careful not to demagnetize your hotel key card.
adverb
British English
- Not commonly used.
American English
- Not commonly used.
adjective
British English
- The demagnetised strip was no longer readable.
- A demagnetising tool is essential for this repair.
American English
- The demagnetized metal showed no polarity.
- Use a demagnetizing coil for the procedure.
Examples
By CEFR Level
- The phone can demagnetize a credit card.
- You should demagnetize old cassette tapes before you throw them away.
- To prevent data leakage, the company policy requires us to demagnetize all decommissioned hard drives.
- The intense heat generated during the fire had the unforeseen consequence of completely demagnetizing the archival backup tapes.
Learning
Memory Aids
Mnemonic
Think: DE-MAGNET-IZE. 'DE' means 'remove', 'MAGNET' is the core, 'IZE' is to make. To MAKE something have its MAGNETISM REMOVED.
Conceptual Metaphor
MAGNETISM IS ATTRACTION/FORCE; thus, TO DEMAGNETIZE IS TO NEUTRALIZE A POWERFUL FORCE.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'размагнитить' in all contexts. In English, it is strictly about removing physical magnetism, while 'размагнитить' can colloquially mean 'to demotivate' or 'to sap energy'.
- Avoid using 'demagnetize' for psychological states. Use 'demotivate', 'drain', 'sap' instead.
Common Mistakes
- Incorrect: 'The boring lecture demagnetized the students.' (Use 'demotivated').
- Spelling: 'demagnetise' is BrE, 'demagnetize' is AmE; mixing them in formal writing is inconsistent.
Practice
Quiz
In which context is 'demagnetize' used correctly?
FAQ
Frequently Asked Questions
In technical contexts, especially with bulk erasure of magnetic media, 'degauss' is a near-perfect synonym. 'Demagnetize' can be broader, applying to any object losing magnetism.
While technically a physical process, it can be used metaphorically in creative writing or speech to mean 'to drain of power or attraction', though this is not its primary meaning.
The process is 'demagnetization' (AmE) / 'demagnetisation' (BrE). A device can be a 'demagnetizer' / 'demagnetiser'.
The direct opposite is 'magnetize' (or 'magnetise' in BrE). 'Remagnetize' is used for restoring magnetism to something that was previously magnetic.