Extroversion

noun

1. Interest in or behavior directed toward others or one's environment rather than oneself.
2. A turning inside out, as of an organ or part.
3. In pathology, a turning inside out, as of the eyelids (see eversion) or of the bladder—in the latter case, a congenital malformation.
4. The condition of being turned wrong side out.

   "extroversion of the bladder"

5. the trait of being interested primarily in things in one's external environement, rather than one's own thoughts and feelings.