orexi-, orex-, -orexia, -orexic, -oretic, -orectic, -rexia +

(Greek: appetite [hunger]; to stretch out for; to desire)

anorectic (s), anorectics (pl)
1. Relating to a pathological loss of appetite.
2. Marked by loss of appetite.
3. Suppressing or causing loss of appetite.
4. An anorectic drug or medicine that suppresses the appetite.
5. Of or affected with anorexia nervosa.
6. A person who is affected with anorexia nervosa.
anorectous
1. Having no appetite.
2. Causing a loss of appetite.
anorexia (s) (noun), anorexias (pl)
1. A general lack or loss of appetite for food; especially, when caused by a disease: Doctors are concerned because too often anorexia is a serious medical condition in which the patient chooses to abstain from food or consumes a minimum of calories that too often result in hospitalization or premature death.

Apparently, anorexia affects girls or young women more often than males.

2. No appetite; also, a shortened term for "anorexia nervosa": Emily's cousin, who is a pediatrician, specializes in therapy for anorexia and works with young women who are unable to overcome their anxieties about food.
anorexia nervosa (s) (noun), anorexia nervosas (pl)
An eating disorder that is characterized by a false perception of one's body appearance: Anorexia nervosa leads to an intense fear of gaining weight, or being overweight, and includes the refusal to maintain an acceptable body weight.

Voluntary starvation and excessive exercising by some of those who have anorexia nervosas cause some victims to become emaciated or abnormally thin.

anorexiant (s) (noun), anorexiants (pl)
A drug or substance that leads to the loss of appetite or a diminished appetite: Since he was overeating to a life-threatening degree, the doctor prescribed an anorexiant to suppress his excessive desire for food.
anorexic
1. A person suffering from anorexia nervosa.
2. Suffering from anorexia nervosa; pathologically thin; anorectic.
3. Characterized by severe economy of style and expression.
anorexigenic
1. Promoting or causing anorexia.
2. Causing anorexia, or loss of appetite; such as, with an anorexigenic drug.
bulimarexia
1. 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.
2. A syndrome in which the symptoms of both bulimia and anorexia nervosa are present, characterized by distorted body image, excessive weight loss, and use of forced vomiting to compensate for periods of binge eating.
bulimorexia, bulimia, boulimia
1. A ravenous or insatiable appetite for food.
2. An eating disorder marked by rapid consumption of large amounts of food, often of minimal nutritional value, in a short period of time.

Such eating, or binge eating, is typically episodic and recurrent, accompanied by an awareness that such overeating is abnormal, by fear that eating cannot be stopped voluntarily, and by a depressed mood and self-deprecating thoughts after each binge.

Each binge is usually terminated by abdominal pain, induced vomiting, or a social interruption of the secret eating pattern.

cynorexia
A voracious appetite, like that of a starved dog.
dipsorexia
A pathological or uncontrollable consumption of alcohol.
dysorexia
Impaired or perverted appetite; eating disorder.
hyperorexia
An excessive appetite or an eating disorder which is characterized by self-induced vomiting after eating.
hyporexia
Diminished appetite.
lycorexia
1. A wolfish or ravenous appetite.
2. An excessive appetite like that of a wolf.