demonstration

noun

1. 1

   a show or display; the act of presenting something to sight or view

   the presentation of new data

   he gave the customer a demonstration

2. 2

   a show of military force or preparedness

   he confused the enemy with feints and demonstrations

3. 3

   a public display of group feelings (usually of a political nature)

   there were violent demonstrations against the war

4. 4

   proof by a process of argument or a series of proposition proving an asserted conclusion

5. 5

   a visual presentation showing how something works

   the lecture was accompanied by dramatic demonstrations

   the lecturer shot off a pistol as a demonstration of the startle response