gravitational wave: meaning, definition, pronunciation and examples
C2Technical/Scientific
Quick answer
What does “gravitational wave” mean?
A ripple in the fabric of spacetime, predicted by Einstein's theory of general relativity, caused by the acceleration of massive objects like black holes or neutron stars.
Audio
Pronunciation
Definition
Meaning and Definition
A ripple in the fabric of spacetime, predicted by Einstein's theory of general relativity, caused by the acceleration of massive objects like black holes or neutron stars.
In broader scientific discourse, the term can sometimes be used to refer to any hypothetical wave-like disturbance in a gravitational field, but this is less common.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or grammatical differences. The concept and term are identical in both varieties.
Connotations
Purely scientific, with no cultural or connotative variation between regions.
Frequency
The term is used with identical frequency in both UK and US academic/technical contexts.
Grammar
How to Use “gravitational wave” in a Sentence
Scientists [verb: detected/observed] gravitational waves from [source].The merger [verb: produced/emitted] powerful gravitational waves.Gravitational waves [verb: travel/propagate] at the speed of light.Vocabulary
Collocations
Examples
Examples of “gravitational wave” in a Sentence
verb
British English
- The black holes will soon gravitationally wave.
American English
- The black holes will soon gravitationally wave.
adverb
British English
- The signal was detected gravitational-wavely.
American English
- The signal was detected gravitational-wavely.
adjective
British English
- The team made a gravitational-wave discovery.
American English
- The team made a gravitational-wave discovery.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Core term in physics and astronomy research papers, lectures, and textbooks.
Everyday
Only in simplified science news reporting (e.g., 'Scientists heard gravitational waves from colliding black holes').
Technical
The primary context. Used with precision in astrophysics, cosmology, and experimental physics discussions.
Vocabulary
Synonyms of “gravitational wave”
Strong
Neutral
Weak
Vocabulary
Antonyms of “gravitational wave”
Watch out
Common Mistakes When Using “gravitational wave”
- Using 'gravity wave' (a fluid dynamics term) instead of 'gravitational wave'.
- Treating it as an uncountable noun (e.g., 'detect gravitational wave' instead of 'detect a gravitational wave' or 'detect gravitational waves').
FAQ
Frequently Asked Questions
No. The waves that pass through Earth are incredibly tiny, stretching and squeezing space by a fraction of an atomic nucleus's width over kilometres. Specialised equipment like LIGO is required to detect them.
The first direct detection in 2015 (announced in 2016) was from the merger of two black holes about 1.3 billion light-years away.
They travel at the speed of light in a vacuum.
'Gravitational waves' are relativistic ripples in spacetime itself. 'Gravity waves' are physical waves in a fluid (like an ocean or the atmosphere) where gravity acts as the restoring force. They are completely different phenomena.
A ripple in the fabric of spacetime, predicted by Einstein's theory of general relativity, caused by the acceleration of massive objects like black holes or neutron stars.
Gravitational wave is usually technical/scientific in register.
Gravitational wave: in British English it is pronounced /ˌɡræv.ɪˌteɪ.ʃən.əl ˈweɪv/, and in American English it is pronounced /ˌɡræv.əˈˌteɪ.ʃən.əl ˈweɪv/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “(none)”
Learning
Memory Aids
Mnemonic
Imagine a heavy ball dropped onto a trampoline (spacetime). The ripples that travel outwards are like gravitational waves. 'Gravity' makes the 'wave'.
Conceptual Metaphor
SPACETIME IS A FABRIC; GRAVITATIONAL DISTURBANCES ARE RIPPLES/WAVES IN THAT FABRIC.
Practice
Quiz
What is the primary cause of detectable gravitational waves?