Noun

(en noun)

Event(s) of which one is cognizant.

(label) An activity which one has performed.

* {{quote-book, year=1913, author=

, title=Lord Stranleigh Abroad , chapter=4 citation , passage=“I have tried, as I hinted, to enlist the co-operation of other capitalists, but experience has taught me that any appeal is futile that does not impinge directly upon cupidity. …”}}

(label) A collection of events and/or activities from which an individual or group may gather knowledge, opinions, and skills.

(label) The knowledge thus gathered.

* {{quote-magazine, date=2013-06-07, author= Ed Pilkington

, volume=188, issue=26, page=6, magazine=(The Guardian Weekly) , title= ‘Killer robots’ should be banned in advance, UN told , passage=In his submission to the UN, [Christof] Heyns points to the experience of drones. Unmanned aerial vehicles were intended initially only for surveillance, and their use for offensive purposes was prohibited, yet once strategists realised their perceived advantages as a means of carrying out targeted killings, all objections were swept out of the way.}}

Noun

(countable) An effort, process, or operation designed to establish or discover a fact or truth; an act of testing; a test; a trial.

* 1591 , , ''Humorous Poems ,

But the false Fox most kindly played his part,

For whatsoever mother-wit or art

Could work he put in proof . No practice sly,

No counterpoint of cunning policy,

No reach, no breach, that might him profit bring.

But he the same did to his purpose wring.

* c. 1633 , , Act 1, Scene 1,

France I more praise and love; you are, my lord,

Yourself for horsemanship much famed; and there

You shall have many proofs to shew your skill.

* 1831 , , A System of Chemistry of Inorganic Bodies , Volume 2,

A given quantity of the spirits was poured upon a quantity of gunpowder in a dish and set on fire. If at the end of the combustion, the gunpowder continued dry enough, it took fire and exploded; but if it had been wetted by the water in the spirits, the flame of the alcohol went out without setting the powder on fire. This was called the proof .

(uncountable) The degree of evidence which convinces the mind of any truth or fact, and produces belief; a test by facts or arguments which induce, or tend to induce, certainty of the judgment; conclusive evidence; demonstration.

* c.1603 , ,

I'll have some proof .

* 1841 , '' in ''Essays: First Series ,

It was a grand sentence of Emanuel Swedenborg, which would alone indicate the greatness of that man's perception, — "It is no proof of a man's understanding to be able to confirm whatever he pleases; but to be able to discern that what is true is true, and that what is false is false, this is the mark and character of intelligence."

* 1990 October 16, ,

Faith, faith is an island in the setting sun

But proof , yes

Proof is the bottom line for everyone

The quality or state of having been proved or tried; firmness or hardness which resists impression, or doesn't yield to force; impenetrability of physical bodies.

(obsolete) Experience of something.

* 1590 , (Edmund Spenser), The Faerie Queene , III.1:

But the chaste damzell, that had never priefe / Of such malengine and fine forgerye, / Did easely beleeve her strong extremitye.

(uncountable, obsolete) Firmness of mind; stability not to be shaken.

(countable, printing) A proof sheet; a trial impression, as from type, taken for correction or examination.

(countable, logic, mathematics) A sequence of statements consisting of axioms, assumptions, statements already demonstrated in another proof, and statements that logically follow from previous statements in the sequence, and which concludes with a statement that is the object of the proof.

(countable, mathematics) A process for testing the accuracy of an operation performed. Compare prove, transitive verb , 5.

(obsolete) Armour of excellent or tried quality, and deemed impenetrable; properly, armour of proof.

(Shakespeare)

(US) A measure of the alcohol content of liquor. Originally, in Britain, 100 proof' was defined as 57.1% by volume (not used anymore). In the US, 100 '''proof''' means that the alcohol content is 50% of the total volume of the liquid, and thus, absolute alcohol would be 200 ' proof .