microgravity
UK[ˌmaɪkrəʊˈɡrævɪti]US[ˌmaɪkroʊˈɡrævɪti]
n
A condition in space or in free fall where the force of gravity is very weak, producing near-weightlessness.
Morpheme Breakdown
micro
gravity
micro
small
gravity
heaviness
Etymology
The term 'microgravity' is a modern scientific compound, constructed in English from classical roots to describe a specific physical condition. The first element, 'micro-', originates from the Ancient Greek mikros (small), a root pervasive in scientific vocabulary to indicate minuteness. The second element, 'gravity', derives from the Latin gravis (heavy, weighty), which passed into English via Old French and came to denote the fundamental force of attraction between masses. Thus, the word's literal construction as "small gravity" logically and directly describes an environment where the perceived effects of gravitational force are drastically reduced, such as in an orbiting spacecraft.
Analysis
Structure: micro (small) + gravity (heaviness)
- micro: From Greek mikros, meaning 'small'. A combining form used in English to denote something extremely small in scale.
- gravity: From Latin gravitas, meaning 'weight, heaviness, seriousness'. It denotes the physical force or the quality of having weight.
Examples
Astronauts conduct experiments in microgravity to study fluid dynamics.
Prolonged exposure to microgravity can lead to muscle atrophy and bone density loss.
The International Space Station provides a unique laboratory for microgravity research.