gravitational constant: meaning, definition, pronunciation and examples
C2Academic/Technical/Scientific
Quick answer
What does “gravitational constant” mean?
The universal constant (G) that appears in Newton's law of universal gravitation, quantifying the strength of the gravitational force between two objects.
Audio
Pronunciation
Definition
Meaning and Definition
The universal constant (G) that appears in Newton's law of universal gravitation, quantifying the strength of the gravitational force between two objects.
A fundamental physical constant used to calculate the attractive force of gravity between masses; in Einstein's theory of general relativity, it relates the geometry of spacetime to the energy and momentum of matter.
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage; both dialects use the identical term and scientific definition. Pronunciation of the constituent words 'gravitational' and 'constant' may have slight regional variations in vowel quality.
Connotations
None beyond the strict scientific meaning.
Frequency
Used exclusively in physics, astronomy, and related scientific fields. Frequency outside such contexts is virtually zero.
Grammar
How to Use “gravitational constant” in a Sentence
The gravitational constant is [adjective: e.g., small, universal].Scientists [verb: e.g., measure, calculate, use] the gravitational constant.The value of the gravitational constant is approximately 6.674×10⁻¹¹ N·m²/kg².Vocabulary
Collocations
Examples
Examples of “gravitational constant” in a Sentence
verb
British English
- The team aims to gravitationally constant the interaction... (NO - 'gravitational constant' is a noun phrase, not a verb.)
American English
- (Not applicable as a verb.)
adverb
British English
- (Not applicable as an adverb.)
American English
- (Not applicable as an adverb.)
adjective
British English
- (Not applicable as a standalone adjective; it is a compound noun.)
American English
- (Not applicable as a standalone adjective.)
Usage
Meaning in Context
Business
Not used.
Academic
Used in advanced physics, astronomy, and engineering textbooks, papers, and lectures.
Everyday
Extremely rare; only in popular science discussions.
Technical
Core term in theoretical and experimental physics, cosmology, and orbital mechanics.
Vocabulary
Synonyms of “gravitational constant”
Strong
Neutral
Weak
Vocabulary
Antonyms of “gravitational constant”
Watch out
Common Mistakes When Using “gravitational constant”
- Saying 'a gravitational constant' (it is 'the' gravitational constant).
- Confusing its symbol 'G' with 'g' (acceleration due to gravity).
- Omitting 'constant' and just saying 'gravitational', which changes the meaning entirely.
FAQ
Frequently Asked Questions
According to current fundamental physics, yes. It is considered a universal constant, meaning its value is presumed to be the same at all points in space and time.
The first accurate laboratory measurement was made by the British scientist Henry Cavendish in 1798 using a torsion balance apparatus.
Gravity is the weakest of the four fundamental forces. Measuring its strength between laboratory-scale masses requires detecting extraordinarily tiny forces, which are easily masked by seismic noise, thermal effects, and electromagnetic interactions.
In the International System of Units (SI), the units are cubic metres per kilogram per square second (m³·kg⁻¹·s⁻²) or equivalently, newton-square-metre per square kilogram (N·m²/kg²).
The universal constant (G) that appears in Newton's law of universal gravitation, quantifying the strength of the gravitational force between two objects.
Gravitational constant is usually academic/technical/scientific in register.
Gravitational constant: in British English it is pronounced /ˌɡræv.ɪˌteɪ.ʃən.əl ˈkɒn.stənt/, and in American English it is pronounced /ˌɡræv.əˈteɪ.ʃən.əl ˈkɑːn.stənt/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “N/A”
Learning
Memory Aids
Mnemonic
Think: 'Gravity's Constant Friend' – G is the friendly letter that always tells you exactly how strong gravity's pull is between any two masses.
Conceptual Metaphor
A UNIVERSAL COUPLING AGENT (metaphor for G connecting mass to force).
Practice
Quiz
What is the primary role of the gravitational constant (G)?