microgravity: meaning, definition, pronunciation and examples
C1Technical / Academic
Quick answer
What does “microgravity” mean?
A state of very low gravity, or the condition in which the effects of gravity are greatly reduced, creating near-weightlessness.
Audio
Pronunciation
Definition
Meaning and Definition
A state of very low gravity, or the condition in which the effects of gravity are greatly reduced, creating near-weightlessness.
The condition of apparent weightlessness experienced in free-falling objects or in orbit, where gravitational forces are countered by other forces like acceleration or orbital motion. The term is also used metaphorically to describe environments or systems with minimal external influence.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or semantic differences. Minor variations in usage frequency due to space programme prominence.
Connotations
Neutral technical term in both variants. In the UK, may be more strongly associated with ESA (European Space Agency) research. In the US, more strongly associated with NASA and commercial spaceflight.
Frequency
Slightly higher frequency in American English due to NASA's public communications and the commercial space sector.
Grammar
How to Use “microgravity” in a Sentence
Conduct research in ~The effects of ~ on...Experiments performed under ~Adaptation to ~Vocabulary
Collocations
Examples
Examples of “microgravity” in a Sentence
verb
British English
- The capsule will microgravity-test the new alloy.
- [Note: Verb use is highly technical and rare]
American English
- The experiment is designed to microgravity-harden the material.
adverb
British English
- [No standard adverbial form. 'In microgravity' is used.]
American English
- [No standard adverbial form. 'Under microgravity' is used.]
adjective
British English
- The microgravity research facility is state-of-the-art.
- They observed microgravity phenomena.
American English
- The microgravity environment poses unique challenges.
- She is a microgravity science specialist.
Usage
Meaning in Context
Business
Used in the context of the commercial space industry, space tourism, and biotechnology ventures exploiting space conditions.
Academic
Core term in physics, aerospace engineering, astrobiology, and space medicine research papers.
Everyday
Rare. Might appear in news reports about space stations, astronaut health, or satellite launches.
Technical
Precise term in aerospace engineering, life sciences experiments on the ISS, and materials science.
Vocabulary
Synonyms of “microgravity”
Strong
Neutral
Weak
Vocabulary
Antonyms of “microgravity”
Watch out
Common Mistakes When Using “microgravity”
- Using 'zero-gravity' as a perfect synonym (scientifically imprecise).
- Misspelling as 'micro-gravity' with a hyphen (standard form is solid).
- Using it to describe just 'floating' without the scientific context.
FAQ
Frequently Asked Questions
No. 'Zero gravity' is a popular but inaccurate term. In microgravity, gravity is still present (e.g., Earth's gravity keeps the ISS in orbit), but objects are in free fall, creating the sensation and effects of weightlessness.
Briefly, in specialised aircraft flying parabolic arcs (so-called 'vomit comet' flights), in drop towers, or during free-fall in a vacuum chamber.
It allows scientists to study physical, chemical, and biological processes without the confounding effects of gravity, leading to advances in materials science, pharmaceuticals, and our understanding of fundamental physics and human physiology.
Yes, prolonged exposure causes muscle atrophy, bone density loss, fluid redistribution (causing a puffy face), and can affect vision and the immune system. These are major challenges for long-duration spaceflight.
A state of very low gravity, or the condition in which the effects of gravity are greatly reduced, creating near-weightlessness.
Microgravity is usually technical / academic in register.
Microgravity: in British English it is pronounced /ˈmaɪ.krəʊ.ˌɡræv.ɪ.ti/, and in American English it is pronounced /ˈmaɪ.kroʊ.ˌɡræv.ə.t̬i/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms; technical term]”
Learning
Memory Aids
Mnemonic
Imagine a tiny (MICRO) ant trying to walk in a space station where gravity (GRAVITY) is almost gone. MICRO + GRAVITY = very small gravity.
Conceptual Metaphor
SPACE IS A LABORATORY; WEIGHTLESSNESS IS FREEDOM; GRAVITY IS A FORCE/BURDEN.
Practice
Quiz
What is the most accurate scientific description of 'microgravity'?