Noun | 1. | eating disorder - a disorder of the normal eating routine disorder, upset - a physical condition in which there is a disturbance of normal functioning; "the doctor prescribed some medicine for the disorder"; "everyone gets stomach upsets from time to time" anorexia - a prolonged disorder of eating due to loss of appetite pica - an eating disorder, frequent in children, in which non-nutritional objects are eaten persistently binge-purge syndrome, binge-vomit syndrome, bulima nervosa, bulimarexia - a disorder of eating in which the person alternates between strong craving for food and aversion to food; characterized by excessive eating followed by periods of fasting or self-induced vomiting binge-eating syndrome, bulimia - a disorder of eating seen among young women who go on eating binges and then feel guilt and depression and self-condemnation |