Alternative spelling of seasickness

(medicine) A pathological condition caused by oxygen deficiency at high altitudes; symptoms include shortness of breath, nausea, and nosebleed.

(medicine) Early morning nausea and vomiting as a symptom of pregnancy.

Alternative form of junk sick

(slang) Experiencing the nausea sometimes suffered by the user of a narcotic the following day, or after the effects of the drug begin to wear off, often with flulike symptoms.

(medicine, pathology) Any illness produced by ionizing radiation with symptoms ranging from nausea to death.

(simile) Very ill.

(pathology) A sometimes fatal condition resulting from the formation of nitrogen bubbles in the blood and tissues, because of too rapid decompression, seen especially in deep-sea divers ascending rapidly from a dive. It is characterized by severe pains in the joints and chest, skin irritation, cramps, nausea, and paralysis.

especially, African sleeping sickness, an endemic infectious disease of humans and animals in tropical Africa, caused by a parasitic trypanosome, transmitted by the tsetse fly and characterized by fever, severe headache, joint pains and lymph node swelling in the early stages, followed by a neurological phase of extreme weakness, sleepiness, and deep coma leading to death

A feeling of nausea or dizziness caused by a disagreement between visually perceived movement and the vestibular system's sense of movement; typically resulting from travel in a vehicle such as a ship or car.