space sickness(redirected from spacesick)
Also found in: Dictionary.
dizziness as result of changes in inner ear resulting from absence of gravity.
Synonym(s): physiologic vertigo
Motion sickness caused by sustained weightlessness during space flight, usually accompanied by disturbance of the inner ear.
space′sick′ (spās′sĭk′) adj.
space sicknessSpace adaptation syndrome, see there.
1. The nausea that people can experience in the low-gravity environment of space.
2. The damage to health from exposure to prolonged low-gravity situations (such as osteoporosis and muscle weakness) or from radiation.