ostension

noun4

1. •
   The act of presenting an ostensive definition.

   • And ostension is one perfectly familiar way of introducing a concept. — 2008
2. •
   An act of showing or demonstrating.
3. •
   The showing of the sacrament on the altar in order that it may receive the adoration of the communicants.
4. •
   Real-life events that parallel well-known events from myth and folklore