travel sickness (motion sickness) - nausea, vomiting, and headache caused by motion during travel by sea, road, or air. The symptoms are due to overstimulation of the balance organs in the inner ear b, liikumistõbi - kinetoos, merehaigus; korduva suureamplituudilise liikumise tekitatud, sisekõrva tasakaaluelundi ärritusseisundist tingitud pearinglus ja iiveldus