motion sickness

motion sickness

noun

Definition of MOTION SICKNESS

: sickness induced by motion (as in travel by air, car, or ship) and characterized by nausea

First Known Use of MOTION SICKNESS

1942

Rhymes with MOTION SICKNESS

morning sickness, mountain sickness, sleeping sickness

motion sickness

noun    (Medical Dictionary)

Medical Definition of MOTION SICKNESS

: sickness induced by motion (as in travel by air, car, or ship) and characterized by nausea—called also kinetosis

motion sickness

noun    (Concise Encyclopedia)

Sickness caused by contradiction between external data from the eyes and internal cues from the balance centre in the inner ear. For example, in seasickness the inner ear senses the ship's motion, but the eyes see the still cabin. This stimulates stress hormones and accelerates stomach muscle contraction, leading to dizziness, pallor, cold sweat, and nausea and vomiting. Minimizing changes of speed and direction may help, as may reclining, not turning the head, closing the eyes, or focusing on distant objects. Drugs can prevent or relieve motion sickness but may have side effects. Pressing an acupuncture point on the wrist helps some people.