noun
the blood group whose red cells carry the A antigen
• Hypernyms: ↑blood group, ↑blood type
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adjective : relating to, characteristic of, having, or being a personality that is marked by impatience, aggressiveness, and competitiveness and that has been implicated by some studies as a factor increasing the risk of cardiovascular disease
type A behavior
• type A noun
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Psychol.
1. of or pertaining to a pattern of behavior characterized by competitiveness, a sense of urgency, impatience, perfectionism, and assertiveness, and possibly associated with an increased risk of heart disease.
2. of or pertaining to a person who exhibits Type A behavior.
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type A,
adjective.
having a driven, competitive personality, focused on achievement: »
a type A workaholic obsessed with his career; I guess type A people have a hard time letting their hobbies stay hobbies (Wall Street Journal).
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n. a personality type characterized by ambition, high energy, and competitiveness, and thought to be susceptible to stress and heart disease
Useful english dictionary. 2012.