monstration

1. obsoleteThe act of demonstrating; proof.

   Representation, or the art of making absent Persons and things present, as often as is requisite—this is imitation, monstration, or demonstration of persons and things

   1895, Lord Edmond Fitzmaurice, Life of Sir William Petty 1623 - 1687/Chapter X

   1 more example

   The Communio, the true point of lustre in the mass, in connection with which the change of substance takes place, and now, after completed consecration, adoration, and monstration of the host, the body of the Lord is partaken of by the priest.

   1878, Jan Jacob van Oosterzee, Practical theology, a manual for theological students

plural monstrations

1. A kind of flash mob popular in Russia, where young people take to the streets with homemade banners and placards sporting absurd, non-political slogans.