Definition of "demonstration" in Anglais

noun

1. The act of demonstrating; showing or explaining something.

2. An event at which something will be demonstrated.

   • I have to give a demonstration to the class tomorrow, and I'm ill-prepared.

3. Expression of one's feelings by outward signs.

4. A public display of group opinion, such as a protest march.

5. A show of military force.

6. (mathematics, philosophy) A proof.

   • He read the proposition. […] So he reads the demonstration of it, which referred him back to such a proposition,; which proposition he read.