star cluster: meaning, definition, pronunciation and examples
C2/LowFormal / Academic / Technical
Quick answer
What does “star cluster” mean?
A gravitationally bound group of stars, held together by mutual gravitational attraction and located within a galaxy.
Audio
Pronunciation
Definition
Meaning and Definition
A gravitationally bound group of stars, held together by mutual gravitational attraction and located within a galaxy.
Any visually distinct grouping of stars; also used metaphorically to describe a group of prominent or excellent people or things gathered together.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling follows national conventions (e.g., 'centre of the cluster' vs. 'center of the cluster' in context).
Connotations
Identical in both varieties.
Frequency
Slightly higher frequency in American scientific publications due to the scale of the astronomy sector, but the term is standard globally.
Grammar
How to Use “star cluster” in a Sentence
[Adj] + star clusterstar cluster + of + [Stars/Objects]Verb (e.g., observe, contain, identify) + star clusterVocabulary
Collocations
Examples
Examples of “star cluster” in a Sentence
verb
British English
- The stars began to cluster more densely near the nebula.
- Young stars often cluster together in stellar nurseries.
American English
- The data shows stars clustering in the galactic plane.
- Talent tends to cluster in major metropolitan areas.
adverb
British English
- The stars are clustered densely together.
- The proposals were clustered thematically for review.
American English
- The offices are clustered closely in the downtown district.
- Symptoms clustered temporally, suggesting a common cause.
adjective
British English
- The cluster dynamics are fascinating.
- We studied the cluster stars' metallicity.
American English
- The cluster analysis revealed new subgroups.
- Their cluster formation theory is groundbreaking.
Usage
Meaning in Context
Business
Rare. Potentially metaphorical, e.g., 'a star cluster of innovative startups in the tech hub.'
Academic
Common in astronomy, astrophysics, and related physical sciences. Used with precise technical definitions.
Everyday
Used by amateur astronomers or in general descriptions of the night sky. Often simplified to 'group of stars.'
Technical
The primary context. Used with classification (open/globular), coordinates, and astrophysical parameters.
Vocabulary
Synonyms of “star cluster”
Strong
Neutral
Weak
Vocabulary
Antonyms of “star cluster”
Watch out
Common Mistakes When Using “star cluster”
- Using 'star cluster' interchangeably with 'galaxy' (a galaxy is vastly larger).
- Confusing 'open cluster' with 'globular cluster' without specifying.
- Incorrect plural: 'stars cluster' instead of 'star clusters'.
FAQ
Frequently Asked Questions
A constellation is a perceived pattern or shape of stars as seen from Earth, with the stars often not physically close. A star cluster is a physically gravitationally bound group of stars located at roughly the same distance.
Yes, several star clusters are visible to the naked eye as faint, fuzzy patches or tight groupings. The most famous examples are the Pleiades (Seven Sisters) and the Hyades in Taurus, and the Beehive Cluster in Cancer.
Generally, yes, especially for open clusters. They form from the same giant molecular cloud at approximately the same time. Globular clusters also contain very old stars of similar age, though there can be multiple generations in some.
It is primarily an astronomical term. However, it is occasionally used metaphorically in journalism or literature to describe a dense grouping of talented individuals (e.g., 'a star cluster of Nobel laureates') or similar objects.
A gravitationally bound group of stars, held together by mutual gravitational attraction and located within a galaxy.
Star cluster is usually formal / academic / technical in register.
Star cluster: in British English it is pronounced /ˈstɑː ˌklʌs.tə/, and in American English it is pronounced /ˈstɑːr ˌklʌs.tɚ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “A cluster of talent (metaphorical)”
Learning
Memory Aids
Mnemonic
Think of STARS CLUSTERed together like grapes in a bunch, held by the 'stem' of gravity.
Conceptual Metaphor
GROUPS ARE CLUSTERS; EXCELLENCE IS STELLAR (e.g., a star cluster of actors).
Practice
Quiz
What is the primary defining characteristic of a star cluster?