Noun

(testimonies)

(legal) statements made by a witness in court.

* {{quote-news

, date = 21 August 2012 , first = Ed , last = Pilkington , title = Death penalty on trial: should Reggie Clemons live or die? , newspaper = The Guardian , url = http://www.guardian.co.uk/world/2012/aug/21/death-penalty-trial-reggie-clemons?newsfeed=true , page = , passage = The Missouri prosecutors' case against Clemons, based partly on incriminating testimony given by his co-defendants, was that Clemons was part of a group of four youths who accosted the sisters on the Chain of Rocks Bridge one dark night in April 1991. }}

An account of first-hand experience.

* Milton

[Thou] for the testimony of truth, hast borne / Universal reproach.

In a church service, a personal account, such as of one's conversion.

Witness; evidence; proof of some fact.

* Bible Mark vi. 11

When ye depart thence, shake off the dust under your feet for a testimony against them.

Noun

(en noun)

The act of demonstrating; showing or explaining something.

An event at which something will be demonstrated.

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

A public display of group opinion.

A show of military force.

A mathematical proof.

* , s.v. Thomas Hobbes:

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