very low frequency
Low (The phrase itself is descriptive of low frequency, but its own usage frequency is moderate in technical contexts and low in everyday contexts).Primarily technical, academic, and formal; occasionally used in everyday language for emphasis.
Definition
Meaning
Refers to something that occurs, appears, or is used extremely rarely or seldom.
In fields like electronics and communications, it denotes a specific range of radio frequencies (VLF: 3–30 kHz). More broadly, any phenomenon, event, or vocabulary item that is highly uncommon.
Linguistics
Semantic Notes
Often used as a compound adjective ('very-low-frequency waves') or a noun phrase ('a very low frequency of occurrence'). It implies a degree of rarity beyond simply 'low frequency'.
Dialectal Variation
British vs American Usage
Differences
No significant difference in core meaning. 'VLF' as an initialism is equally common in both technical communities.
Connotations
Identical connotations of extreme rarity or specific technical band.
Frequency
Slightly higher frequency in British academic writing according to corpus data, but the difference is marginal.
Vocabulary
Collocations
Grammar
Valency Patterns
[Noun] + [Prep. *of*] + [very low frequency][Adjective] + [very low frequency] + [noun][Verb] + [at/on a] + very low frequencyVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Once in a blue moon (informal equivalent for events)”
Usage
Context Usage
Business
"Customer complaints of this type are at a very low frequency, which is a positive sign."
Academic
"The study focused on the impact of very low frequency electromagnetic fields on biological systems."
Everyday
"Power cuts in this area are at a very low frequency now."
Technical
"The transmitter was calibrated to emit pulses at a very low frequency of 12 kHz."
Examples
By Part of Speech
verb
British English
- The system very-low-frequency-modulates the carrier wave.
- Errors of this class very lowly frequent the logs.
American English
- The device very-low-frequency-oscillates.
- Such incidents very infrequently occur.
adverb
British English
- The fault occurs very low frequency.
- He visits very low frequency.
American English
- The issue appears very low frequency.
- It happens very low frequency.
Examples
By CEFR Level
- My grandmother writes letters very low frequency now.
- Snow is very low frequency in my city.
- Serious accidents have a very low frequency on this road.
- I check that email account with very low frequency.
- The research identified a gene variant with a very low frequency in the population.
- Very low frequency trading algorithms can react to long-term market shifts.
- The submarine uses very low frequency radio waves for deep-sea communication, as they penetrate water effectively.
- Statisticians were concerned about the very low frequency of responses from the elderly cohort, potentially biasing the results.
Learning
Memory Aids
Mnemonic
Think of 'VLF' as 'Visits Look Faint' – things that happen at a very low frequency are so rare you can barely see them visit.
Conceptual Metaphor
FREQUENCY IS VISIBILITY/PRESENCE (A very low frequency is like something almost invisible or barely present on the radar).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calque 'очень низкая частота' for non-technical contexts; use 'крайне редко' (extremely rarely) for events/occurrences.
- In Russian, 'низкая частота' alone can sound technical; the English phrase is more versatile.
Common Mistakes
- Using 'very low frequency' as an adjective without hyphens when it precedes a noun (e.g., 'very low frequency signal' should be 'very-low-frequency signal' in formal writing).
- Confusing 'frequency' (how often) with 'frequence' (non-standard).
Practice
Quiz
In which context is 'very low frequency' MOST likely to be used literally and technically?
FAQ
Frequently Asked Questions
No. Hyphens are used when the phrase functions as a compound adjective before a noun (e.g., a very-low-frequency signal). When used as a noun phrase or predicatively, no hyphens are needed (e.g., The occurrence is of very low frequency).
'Low frequency' is relative and general, meaning 'not happening often.' 'Very low frequency' emphasizes an extreme degree of rarity, meaning 'happening hardly at all,' or refers specifically to the VLF band in engineering.
Yes, in lexicography and language learning, 'very low frequency words' are those that appear extremely rarely in a corpus or everyday use, often considered for advanced study only.
It is almost always pronounced letter by letter: 'V-L-F'. The full phrase 'very low frequency' is used in formal writing, while the initialism is common in technical and military contexts.
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