Smart Definition
Etymology
Pronunciation
demostración
demonstration
demonstrate
to show or prove
+
-ción
noun suffix (action or state)
Demostración means demonstration and can be thought of as demonstrate0 + -ción1 (noun suffix1).
noun
  1. demonstration
    A presentation or exhibition to show how something works or is done.
    Haremos una demostración del nuevo producto. // We will give a demonstration of the new product.