light curve: meaning, definition, pronunciation and examples
C2Highly technical (astronomy/astrophysics)
Quick answer
What does “light curve” mean?
A graph plotting the brightness of an astronomical object (like a star or asteroid) over time.
Audio
Pronunciation
Definition
Meaning and Definition
A graph plotting the brightness of an astronomical object (like a star or asteroid) over time.
A quantitative representation of luminosity changes, used to deduce physical properties such as rotation period, binary companion presence, or intrinsic variability.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling conventions follow general BrE/AmE rules in surrounding text (e.g., 'analyse' vs. 'analyze').
Connotations
Identical technical connotations in both varieties.
Frequency
Extremely rare outside professional or academic astronomical contexts in both varieties.
Grammar
How to Use “light curve” in a Sentence
The [astronomical object] light curveTo plot the light curve of [object]The light curve reveals [property]Vocabulary
Collocations
Examples
Examples of “light curve” in a Sentence
verb
British English
- The team will light-curve the new variable star. (rare, technical verbification)
American English
- They need to light-curve the candidate exoplanet. (rare, technical verbification)
adjective
British English
- The light-curve analysis was conclusive.
American English
- They performed a light-curve modeling exercise.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Core term in astronomy/physics papers discussing variable stars, exoplanet transits, asteroid rotation, etc.
Everyday
Extremely rare. Might be encountered in popular science articles about space discoveries.
Technical
Essential, precise term for data analysis in observational astronomy.
Vocabulary
Synonyms of “light curve”
Neutral
Weak
Vocabulary
Antonyms of “light curve”
Watch out
Common Mistakes When Using “light curve”
- Using plural 'lights curves' (incorrect; plural is 'light curves').
- Confusing it with a simple photograph or image of a curved object.
FAQ
Frequently Asked Questions
No, it is a highly specialised technical term used almost exclusively in astronomy and astrophysics.
While technically possible by analogy, in practice the term is reserved for astronomical contexts. An engineer would likely say 'luminosity decay profile'.
The plural is 'light curves'. It is a regular plural formation for the compound noun.
No, it's a noun used attributively within a compound noun. It modifies 'curve' to specify it is a curve of light (brightness) data.
A graph plotting the brightness of an astronomical object (like a star or asteroid) over time.
Light curve is usually highly technical (astronomy/astrophysics) in register.
Light curve: in British English it is pronounced /laɪt kɜːv/, and in American English it is pronounced /laɪt kɜːrv/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Imagine a curved line drawn by a pen that tracks a star's light, going up when it brightens and down when it dims.
Conceptual Metaphor
A CURVE IS A FINGERPRINT (a light curve uniquely identifies an object's behavior).
Practice
Quiz
What primary information does a 'light curve' provide?