Definitions for vomiting
vomit, vomiting, emesis, regurgitation, disgorgement, puking(noun)
the reflex act of ejecting the contents of the stomach through the mouth
The action of the verb vomit
the spasmodic ejection of matter from the stomach through the mouth
U.S. National Library of Medicine
The forcible expulsion of the contents of the STOMACH through the MOUTH.
Vomiting is the forceful expulsion of the contents of one's stomach through the mouth and sometimes the nose. Vomiting can be caused by a wide variety of conditions; it may present as a specific response to ailments like gastritis or poisoning, or as a non-specific sequela of disorders ranging from brain tumors and elevated intracranial pressure to overexposure to ionizing radiation. The feeling that one is about to vomit is called nausea, which often precedes, but does not always lead to, vomiting. Antiemetics are sometimes necessary to suppress nausea and vomiting. In severe cases, where dehydration develops, intravenous fluid may be required. Vomiting is different from regurgitation, although the two terms are often used interchangeably. Regurgitation is the return of undigested food back up the esophagus to the mouth, without the force and displeasure associated with vomiting. The causes of vomiting and regurgitation are generally different.