microgravity

[ mahy-kroh-grav-i-tee ]

noun

1. a condition, especially in space orbit, where the force of gravity is so weak that weightlessness results.

microgravity

/ ˈmaɪkrəʊˌɡrævɪtɪ /

noun

1. the very low apparent gravity experienced in a spacecraft in earth orbit

microgravity

/ mī′krō-grăv′ĭ-tē /

1. A condition in which an object in the gravitational field of some other body (such as the Earth) is accelerated freely as a result of the gravitational force. Free-falling objects, such as a skydiver or a satellite orbiting the Earth, are in a condition of microgravity, while objects held up by forces resisting gravity (as in the case of objects resting on the Earth's surface) or held up by aerodynamic forces (as in the case of birds or aircraft) are not. Since the normal experience of weight on Earth is the result of forces that resist gravity, objects in microgravity appear weightless. Not all effects of gravity are eliminated in such conditions; tidal forces , for example, still affect bodies in microgravity, especially large bodies such as the Earth and the Moon.

Word History and Origins

Origin of microgravity¹

First recorded in 1980–85; micro- + gravity

Example Sentences

Living in microgravity causes bodily fluids to become more evenly distributed, with up to two extra liters of blood becoming unnaturally congested in the upper body, triggering constant feelings of puffiness and congestion, especially in the head and face.

From Salon

Reduced pressure on the urinary sphincter is one of the many sensations dulled by living in microgravity, along with smell, taste and sight.

From Salon

Besides the redistribution of fluid in the body, changes made to the skeletal system by living in microgravity can cause longer-term health consequences.

From Salon

For those of us who haven’t been to space yet, health conditions caused by living in microgravity can be a reminder of how relatively comfortable life is here on Earth.

From Salon

Co-lead Dr Julia Low said the team found the VR simulation offered an immersive experience of a confined environment, evoking more intense perceptions of all the food aromas tested, except lemongrass, than the microgravity posture.

From Science Daily