The term 'ambidexterity' is basically being adept in the use of both right and left hand. Michelangelo, Leonardo Vinci, Einstein, Fleming, Harry Truman, etc., were all ambidextrous. In modern times, you will find many, who were originally left-handed but in the course of their childhood, were drilled to acquire right-handed habits (at school or home) and thus became ambidextrous.