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a temperament type characterized by love of physical adventure, boundless energy, boldness, aggressiveness, and need for exercise and activity; the behavior counterpart of mesomorphy.
somatotonia(sō″mă-tō-tō′nē-ă) [″ + L. tonus, a stretching]
A personality type in which there is a predominance of physical assertiveness and activity.
n one of the three temperaments described by WH Sheldon—characterized as active, energetic, assertive, sometimes aggressive, and not openly affective.