Prof vs. Proof — What's the Difference?

A professor.

The evidence or argument that compels the mind to accept an assertion as true.

(informal) professor

The validation of a proposition by application of specified rules, as of induction or deduction, to assumptions, axioms, and sequentially derived conclusions.

(informal) profit

A statement or argument used in such a validation.

Someone who is a member of the faculty at a college or university

Convincing or persuasive demonstration

The state of being convinced or persuaded by consideration of evidence.

Determination of the quality of something by testing; trial

The establishment of the truth or falsity of an allegation by evidence.

The evidence offered in support of or in contravention of an allegation.

The alcoholic strength of a liquor, expressed by a number that is twice the percentage by volume of alcohol present.

A trial sheet of printed material that is made to be checked and corrected. Also called proof sheet.

A trial impression of a plate, stone, or block taken at any of various stages in engraving.

A trial photographic print.

Any of a limited number of newly minted coins or medals struck as specimens and for collectors from a new die on a polished planchet.

(Archaic) Proven impenetrability

Fully or successfully resistant; impervious. Often used in combination

Of standard alcoholic strength

Used to proofread or correct typeset copy

To make a trial impression of (printed or engraved matter).

To proofread (copy).

To activate (dormant dry yeast) by adding water.

To work (dough) into proper lightness.

To treat so as to make resistant

(Printing) To proofread.

To become properly light for cooking

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

(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.

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

(obsolete) Experience of something.

Firmness of mind; stability not to be shaken.

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

(numismatics) A limited-run high-quality strike of a particular coin, originally as a test run, although nowadays mostly for collectors' sets.

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.

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.

(US) A measure of the alcohol content of liquor. Originally, in Britain, 100 proof was defined as 57.1% by volume (no longer used). In the US, 100 proof means that the alcohol content is 50% of the total volume of the liquid; thus, absolute alcohol would be 200 proof.

Used in proving or testing.

Firm or successful in resisting.

(of alcoholic liquors) Being of a certain standard as to alcohol content.

To proofread.

(transitive) To make resistant, especially to water.

To test-fire with a load considerably more powerful than the firearm in question's rated maximum chamber pressure, in order to establish the firearm's ability to withstand pressures well in excess of those expected in service without bursting.

To allow yeast-containing dough to rise.

To test the activeness of yeast.

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

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

The quality or state of having been proved or tried; firmness or hardness that resists impression, or does not yield to force; impenetrability of physical bodies.

Firmness of mind; stability not to be shaken.

A trial impression, as from type, taken for correction or examination; - called also proof sheet.

Armor of excellent or tried quality, and deemed impenetrable; properly, armor of proof.

Used in proving or testing; as, a proof load, or proof charge.

Firm or successful in resisting; as, proof against harm; waterproof; bombproof.

Being of a certain standard as to strength; - said of alcoholic liquors.

Any factual evidence that helps to establish the truth of something;

A formal series of statements showing that if one thing is true something else necessarily follows from it

A measure of alcoholic strength expressed as an integer twice the percentage of alcohol present (by volume)

(printing) an impression made to check for errors

A trial photographic print from a negative

The act of validating; finding or testing the truth of something

Make or take a proof of, such as a photographic negative, an etching, or typeset

Knead to reach proper lightness;

Read for errors;

Activate by mixing with water and sometimes sugar or milk;

Make resistant to water, sound, errors, etc.;

(used in combination or as a suffix) able to withstand;