spiral galaxy: meaning, definition, pronunciation and examples
C1technical, academic, educational
Quick answer
What does “spiral galaxy” mean?
A type of galaxy characterized by a flat, rotating disk of stars, gas, and dust, with a central bulge and luminous spiral arms.
Audio
Pronunciation
Definition
Meaning and Definition
A type of galaxy characterized by a flat, rotating disk of stars, gas, and dust, with a central bulge and luminous spiral arms.
In astrophysics, it is a fundamental galactic morphology; in a broader metaphorical context, it can symbolize concepts of evolution, infinity, or a complex, unfolding process.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Minor potential variations in the pronunciation of 'galaxy'.
Connotations
Identical scientific connotations.
Frequency
Equally frequent in relevant scientific and popular science contexts in both varieties.
Grammar
How to Use “spiral galaxy” in a Sentence
[The/This] spiral galaxy + verb (rotates, contains, exhibits, is classified as)spiral galaxy + [of + NAME] (e.g., spiral galaxy of Andromeda)Adj + spiral galaxy (e.g., nearby, barred, magnificent)Vocabulary
Collocations
Examples
Examples of “spiral galaxy” in a Sentence
adjective
British English
- The spiral-galaxy structure was evident in the new radio telescope images.
- They proposed a spiral-galaxy model for the distribution.
American English
- The spiral-galaxy structure was clear in the new telescope data.
- They developed a spiral-galaxy classification system.
Usage
Meaning in Context
Business
Rare, except in metaphorical use for strategic growth: 'Our market expansion followed a spiral galaxy model, with new product arms emerging from a core brand.'
Academic
Primary usage. Common in astronomy, astrophysics, and cosmology texts, lectures, and research papers.
Everyday
Used in popular science, documentaries, and general knowledge contexts when discussing space.
Technical
Precise classification in observational astronomy and galactic dynamics, often with subtypes (Sa, Sb, Sc, SBa, etc.).
Vocabulary
Synonyms of “spiral galaxy”
Neutral
Weak
Vocabulary
Antonyms of “spiral galaxy”
Watch out
Common Mistakes When Using “spiral galaxy”
- Misspelling as 'sprial galaxy'.
- Using 'elliptical' or 'galaxy' interchangeably with 'spiral galaxy'.
- Incorrect plural: 'spirals galaxies' instead of 'spiral galaxies'.
FAQ
Frequently Asked Questions
Yes, the Milky Way is classified as a barred spiral galaxy.
Spiral arms are density waves—regions where stars and gas are compressed as they orbit the galactic centre, leading to enhanced star formation and brightness.
Spiral galaxies have a distinct disk and spiral structure with ongoing star formation. Elliptical galaxies are generally rounder or oval, lack a disk and spiral arms, and contain older stars with little new star formation.
Yes, galactic collisions are common. When two spiral galaxies merge, they often lose their spiral structure temporarily, eventually forming an elliptical galaxy.
A type of galaxy characterized by a flat, rotating disk of stars, gas, and dust, with a central bulge and luminous spiral arms.
Spiral galaxy is usually technical, academic, educational in register.
Spiral galaxy: in British English it is pronounced /ˌspaɪrəl ˈɡæləksi/, and in American English it is pronounced /ˌspaɪrəl ˈɡæləksi/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Imagine a SPIRalling firework creating a GALAXY of sparks in the sky. SPIRal GALAXY.
Conceptual Metaphor
A SPIRAL GALAXY IS A COSMIC PINWHEEL / A SPIRAL GALAXY IS A STAR-FORMING ENGINE.
Practice
Quiz
What is a defining feature of a spiral galaxy?