Polyphagia or hyperphagia is an abnormally strong, incessant sensation of hunger or desire to eat often leading to overeating. In contrast to an increase in appetite following exercise, polyphagia does not subside after eating and often leads to rapid intake of excessive quantities of food.

嗜食是一个汉语词汇，拼音是shìshí，嗜:爱好，非常喜欢的。嗜食:非常喜欢吃的食物，又解释为某人极为享受地享用食物。

贪吃，指一种超过需求，拼命吃东西的一种症状，这是一种病态，而这种饮食方式容易造成病态肥胖。

Eating an excess amount of food in a short period of time, as seen in the disorder of BULIMIA NERVOSA. It is caused by an abnormal craving for food, or insatiable hunger also known as \"ox hunger\".

多食症，也作食欲过旺，是指极度的饥饿或食欲的增加。