Webster's New World Medical Dictionary

3
In
psychoanalysis, a predisposition to a given trait or
personality characteristic.
ANLL
Acute nonlymphocytic leukemia.
annexin
One of a family of proteins that bind cal-
cium and phospholipids.
annexin V
A substance that normally forms a
shield around certain phospholipid molecules in
the blood, blocking their entry into coagulation
(clotting) reactions. Annexin V is thought to be a
cause of antiphospholipid syndrome.
anomaly
Any deviation from normal, out of the
ordinary. In medicine, an anomaly is usually some-
thing that is abnormal at birth.
anomaly, congenital
A birth defect. A minor
congenital anomaly is an unusual anatomic feature
such as a short second toe that is of no serious med-
ical or cosmetic consequence. By contrast, a major
congenital anomaly is a defect such as a cleft palate
that is of serious medical or cosmetic consequence.
anorexia
A decreased appetite or an aversion to
food, resulting in disturbed eating habits and weight
loss. Anorexia may be caused by some medications
and medical conditions, particularly in elderly or
hospitalized patients. See also 
anorexia nervosa.
anorexia nervosa
An eating disorder character-
ized by extreme attempts to control the diet and/or
an aversion to food. It affects young women most
often, but it may also be seen in men, children, and
older adults. Symptoms can include extreme weight
loss, weakness, and dulling of hair and skin. In
some cases, anorexia nervosa may be a form of
obsessive-compulsive disorder. Treatment includes
medication, therapy, dietary counseling and, in
extreme cases, hospitalization. Untreated anorexia
can cause organ failure and death. See also 
body
dysmorphic disorder; bulimia nervosa; obsessive-
compulsive disorder.