introversion Meaning, Definition & Usage

  1. noun the condition of being folded inward or sheathed
    invagination.
  2. noun the folding in of an outer layer so as to form a pocket in the surface
    invagination; infolding; intussusception.
    • the invagination of the blastula
  3. noun (psychology) an introverted disposition; concern with one's own thoughts and feelings

WordNet

In`tro*ver"sion noun
Etymology
See Introvert.
Definitions
  1. The act of introverting, or the state of being introverted; the act of turning the mind inward. Berkeley.

Webster 1913