extroversion

noun

1. (obsolete, uncountable, usually)The state or quality of being extroverted or an extrovert

   “in mystical Divinity... a scattering or distracting ones thoughts upon exterior objects.”

   “The turning of the eye of the mind from [Christ] to outward things [mystics] call Extroversion.”

2. (uncountable, usually)The state or quality of being extroverted or an extrovert

   “In extroversion of the bladder the anterior part of this organ is more or less completely wanting.”

3. (informal, uncountable, usually)The state or quality of being extroverted or an extrovert

   “Extroversion is the thrusting out of the mind on to life, the use of the mind in practical affairs, the pouring out of the libido on external objects.”

   “In a genre characterized by brassy extroversion, The Dead is a quiet revolutionary: a musical that dares to be diffident.”

   “The roots of what are popularly taken to be introversion and extroversion show up in infancy: positive emotionality, or extroversion, and negative emotionality, or neuroticism.”