Demonstration

The act of demonstrating; an exhibition; proof; especially, proof beyond the possibility of doubt; indubitable evidence, to the senses or reason.

An expression, as of the feelings, by outward signs; a manifestation; a show.

The exhibition and explanation of a dissection or other anatomical preparation.

(Mil.) a decisive exhibition of force, or a movement indicating an attack.

The act of proving by the syllogistic process, or the proof itself.

A course of reasoning showing that a certain result is a necessary consequence of assumed premises; -- these premises being definitions, axioms, and previously established propositions.

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

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"