Alternative spelling of bulletproof (Capable of withstanding a direct shot, reliable, or unbreakable).

Designed and constructed to withstand or minimize damage from an internal or external explosion.

(logic) The indirect verification or falsification of a statement by the verification or falsification of each of the finite number of cases which arise therefrom.

plural of proof by exhaustion

(rare, software engineering) proof of concept; pilot project

Capable of surviving changes made in the future; not liable to become outdated.

(transitive) To make ready to meet potential future requirements, or make use of potential future opportunities.

(distilleries) A certain degree of strength in alcoholic liquor, as formerly ascertained by the floating or sinking of glass globules of different specific gravities thrown into it, and later by more accurate meters.

Overproof; containing more alcohol than proof spirit.

(printing) A page of proofed text; a sheet used to make corrections, emendations etc. before being printed for use. / (photography) A contact print.