collapsar: meaning, definition, pronunciation and examples
Very LowTechnical/Scientific
Quick answer
What does “collapsar” mean?
A star that has undergone gravitational collapse, especially one that becomes a black hole.
Audio
Pronunciation
Definition
Meaning and Definition
A star that has undergone gravitational collapse, especially one that becomes a black hole.
In astrophysics, a theoretical or observed celestial object resulting from the collapse of a massive star's core, leading to the formation of a black hole or neutron star. The term is sometimes used more broadly to refer to any extremely dense stellar remnant formed by collapse.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling is identical.
Connotations
Identical technical connotations in both varieties.
Frequency
Equally rare and specialized in both British and American English, confined almost exclusively to astrophysical literature and discussion.
Grammar
How to Use “collapsar” in a Sentence
The [massive star] collapsed into a collapsar.Scientists observed the formation of a collapsar.The [theory] describes a collapsar as a...Vocabulary
Collocations
Examples
Examples of “collapsar” in a Sentence
verb
British English
- The star will ultimately collapsar, leaving behind a singularity.
- The core began to collapsar under its own gravity.
American English
- The massive star is predicted to collapsar, producing a gamma-ray burst.
- Did the progenitor star collapsar rapidly or gradually?
adverb
British English
- The core failed collapsarly, resulting in a neutron star.
- Not used.
American English
- The star proceeded collapsarly towards a singularity.
- Not used.
adjective
British English
- The collapsar phase of stellar evolution is brief but critical.
- They studied the collapsar mechanism in detail.
American English
- The collapsar event was detected by its neutrino signature.
- Simulations show a complex collapsar dynamics.
Usage
Meaning in Context
Business
Not used.
Academic
Used in astrophysics papers and advanced textbooks to discuss stellar evolution and black hole formation.
Everyday
Virtually never used.
Technical
The primary domain. Used in research on gamma-ray bursts, supernovae, and gravitational collapse.
Vocabulary
Synonyms of “collapsar”
Strong
Neutral
Weak
Vocabulary
Antonyms of “collapsar”
Watch out
Common Mistakes When Using “collapsar”
- Using 'collapsar' interchangeably with 'black hole' in all contexts (a collapsar is often the process or immediate result).
- Misspelling as 'collapser'.
- Using it in non-scientific contexts where 'collapse' or 'black hole' would be appropriate.
FAQ
Frequently Asked Questions
Not exactly. A collapsar specifically refers to the star undergoing gravitational collapse or the immediate product of that collapse, which often, but not always, becomes a black hole. 'Black hole' is the term for the resulting spacetime region if the collapse is complete.
It would be highly unusual and likely confusing. The term is strictly for technical discussions in astrophysics.
The term was introduced by physicists in the mid-20th century, notably associated with the work of scientists like John Archibald Wheeler, as they developed theories of gravitational collapse.
In some broader definitions, yes, as they are formed by the collapse of a stellar core. However, the term is more frequently associated with complete collapse to a black hole.
A star that has undergone gravitational collapse, especially one that becomes a black hole.
Collapsar is usually technical/scientific in register.
Collapsar: in British English it is pronounced /kəˈlæpsɑː/, and in American English it is pronounced /kəˈlæpsɑːr/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None. The term is purely technical.”
Learning
Memory Aids
Mnemonic
Think of a star that can no longer support its own weight and COLLAPSEs completely, becoming a collapsAR (like a 'quasar' but from collapse).
Conceptual Metaphor
A cosmic sinkhole; the ultimate stellar bankruptcy where assets (mass) overwhelm the structure.
Practice
Quiz
In which field is the term 'collapsar' primarily used?