Type Atype A
a personality type characterized by drive, impatience, aggression, etc., traits thought to make one more susceptible to stress
Origin of Type Afirst used (c. 1974) by M. Friedman and amp; R. Rosenman, United States physicians
or Type A
Of or relating to a personality or behavior pattern that is marked by tenseness, impatience, and aggressiveness and is thought to be associated with an increased risk factor for heart disease.
A person who has this personality or exhibits this behavior pattern.