crepuscular ray: meaning, definition, pronunciation and examples
C2Literary, Technical (meteorology/atmospheric optics)
Quick answer
What does “crepuscular ray” mean?
A shaft of sunlight visible through gaps in clouds, often fanning out from the sun's position, typically seen around sunrise or sunset.
Audio
Pronunciation
Definition
Meaning and Definition
A shaft of sunlight visible through gaps in clouds, often fanning out from the sun's position, typically seen around sunrise or sunset.
Any visible beam of sunlight separated by darker shadows caused by atmospheric elements, such as clouds or mountain ranges, creating a dramatic optical effect in the sky.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Slight preference for the term 'sunbeams' in informal British contexts.
Connotations
Both varieties carry the same poetic and technical connotations.
Frequency
Equally rare and specialized in both dialects.
Grammar
How to Use “crepuscular ray” in a Sentence
The [sky/landscape] was lit by crepuscular rays.We watched the crepuscular rays [fan out/stream through] the clouds.Vocabulary
Collocations
Examples
Examples of “crepuscular ray” in a Sentence
verb
British English
- The light crepusculared through the broken cloud. (extremely rare/poetic)
American English
- [No standard verb form]
adverb
British English
- [No standard adverb form]
American English
- [No standard adverb form]
adjective
British English
- The crepuscular-ray effect was stunning.
American English
- We witnessed a classic crepuscular ray phenomenon.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Used in meteorology, atmospheric physics, and geography papers describing optical phenomena.
Everyday
Rare; used by photographers, nature enthusiasts, or in descriptive writing.
Technical
Standard term in atmospheric optics; used to describe the geometry of light scattering and perspective effects.
Watch out
Common Mistakes When Using “crepuscular ray”
- Pronouncing 'crepuscular' as /krepjʊskjʊlə/ (correct is /krɪˌpʌskjʊlə/).
- Using it to describe any ray of light, not specifically those seen at dawn/dusk or in dramatic contrast.
- Misspelling as 'crepuscular ray'.
FAQ
Frequently Asked Questions
They are most common and dramatic around twilight (hence 'crepuscular'), but similar phenomena can occur whenever sunlight is scattered and separated by clouds or topography.
Crepuscular rays appear to converge towards the sun. Anti-crepuscular rays are the same phenomenon seen on the opposite side of the sky, where they appear to converge towards the antisolar point (the point directly opposite the sun).
No, it is a specialized term. In everyday conversation, people are more likely to say 'sunbeams' or 'rays of light'.
This is largely a perspective effect, similar to how parallel railway tracks appear to converge in the distance. The rays are near-parallel columns of sunlit air, but perspective makes them seem to radiate from the sun's position.
A shaft of sunlight visible through gaps in clouds, often fanning out from the sun's position, typically seen around sunrise or sunset.
Crepuscular ray is usually literary, technical (meteorology/atmospheric optics) in register.
Crepuscular ray: in British English it is pronounced /krɪˌpʌskjʊlə ˈreɪ/, and in American English it is pronounced /krɪˌpʌskjələr ˈreɪ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[None specific to the phrase]”
Learning
Memory Aids
Mnemonic
Think of 'crepuscular' (related to twilight) + 'ray' (beam of light) = twilight beams. Picture the dramatic rays of light you see at dusk ('crepuscule') piercing through the clouds.
Conceptual Metaphor
LIGHT IS A SUBSTANCE (rays are 'pillars', 'columns', 'shafts' that can 'fan out' or 'stream down').
Practice
Quiz
In which context is the term 'crepuscular ray' most precisely used?